Penny - The Big Bang Theory

The Big Bang Theory - Main Cast

The Big Bang Theory

The Big Bang Theory


2007 - 2018

Number of episodes:
279 Episodes in 12 Seasons

The Big Bang Theory is centered on five characters living in Pasadena, California: roommates Leonard Hofstadter and Sheldon Cooper; Penny, a waitress and aspiring actress who lives across the hall; and Leonard and Sheldon's equally geeky and socially awkward friends and co-workers, mechanical engineer Howard Wolowitz and astrophysicist Raj Koothrappali. The geekiness and intellect of the four guys is contrasted for comic effect with Penny's social skills and common sense.

Kaley Cuoco - Penny in The Big Bang Theory
All The Big Bang Theory Episodes with Kaley Cuoco

Kaley Cuoco als Penny bei The Big Bang Theory
Image: Kaley Cuoco as Penny in The Big Bang Theory


as Penny

200 Episodes (2007-2016)

from Episode: 1.01 - Pilot

Birth Name:
Kaley Christine Cuoco

Born November 30, 1985
in Camarillo, Kalifornien, USA

Staffel 1 - Alle Folgen mit Kaley Cuoco



A pair of brilliant theoretical physicists meet a woman who shows them how little they know about the real world.

The Big Bran Hypothesis

Penny is furious and more than a little freaked out with Leonard and Sheldon when they sneak into her apartment overnight, and clean it while she is sleeping.

The Fuzzy Boots Corollary

Leonard gets upset when he discovers that Penny is seeing a new guy, so he tries to trick her into going on a date with him.

The Luminous Fish Effect

Sheldon's Christian-fundamentalist mother visits to get him out of the funk he's in after he is fired for being disrespectful toward his new boss.

The Hamburger Postulate

Leonard and his colleague Leslie spend the night together. But Leslie tells Leonard after the fact that she's only interested in a one-night stand.

The Middle Earth Paradigm

The guys are invited to Penny's Halloween costume party. During the party, Leonard has a run-in with Penny's ex-boyfriend.

The Dumpling Paradox

When Howard hooks up with Penny's old friend, it ruins the nights on which all of the guys play the game "Halo."

The Grasshopper Experiment

Rajesh's parents, communicating from India by Web cam, arrange for him to go out with another Indian woman in the hopes of marriage, but his date turns out to have more in common with Sheldon.

The Cooper-Hofstadter Polarization

Leonard and Sheldon's friendship is put to the test when Leonard wants to present a paper they co-authored at a physics convention, but Sheldon does not.

The Loobenfeld Decay

Leonard lies to Penny so that he and Sheldon can get out of watching her perform. However, Sheldon believes that the lie has too many loose ends, so he comes up with a new, unnecessarily complex one to replace it.

The Pancake Batter Anomaly

Sheldon is sick, and Leonard and the guys sneak out to a "Planet of the Apes" movie marathon to get out of taking care of him--which leaves Penny as the only person to whom the needy Sheldon can turn.

The Jerusalem Duality

Sheldon is threatened when a new 15-year-old prodigy who is smarter than him joins the lab, so the guys come up with a plan to get rid of him.

The Bat Jar Conjecture

Sheldon becomes so intent on demonstrating his intellectual superiority over his Physics Bowl teammates that they boot him, and replace him with his nemesis.

The Nerdvana Annihilation

Penny gets mad at Leonard because the guys' new "time machine" causes her to miss work. Leonard is so devastated that he vows to give up all of his nerd memorabilia.

The Pork Chop Indeterminacy

Sheldon's sexy twin sister arrives in town from Texas, and all of Sheldon's friends fight over who will get to be with her.

The Peanut Reaction

When Penny and the guys learn that Leonard has never had a birthday party, they decide to try to throw a surprise party for him.

The Tangerine Factor

After Penny breaks up with her new guy, she agrees to go out on a date with Leonard. However, both of them have reservations about the date soon after agreeing to it.

Staffel 2 - Alle Folgen mit Kaley Cuoco

The Bad Fish Paradigm

Leonard is concerned when his date with Penny ends abruptly and she starts blowing him off. When told the truth, Sheldon would rather move out than keep Penny's reasons a secret from Leonard.

The Codpiece Topology

After seeing Penny with her new boyfriend, Leonard turns to Leslie for comfort. The move angers Sheldon, who considers Leslie his comic book-style "arch enemy."

The Barbarian Sublimation

Sheldon turns Penny on to online gaming, and then she refuses to turn it off after becoming addicted.

The Griffin Equivalency

After being featured in a People magazine article, Raj becomes full of himself and alienates his friends. However, his newfound fame does get him a date with Penny.

The Euclid Alternative

The gang tries to teach Sheldon how to drive.

The Cooper-Nowitzki Theorem

Sheldon becomes cozy with a female graduate student who is infatuated with him, but nobody can figure out whether they're in a relationship--including Sheldon.

The Panty Pinata Polarization

Penny plans revenge when Sheldon bans her from the guys' apartment, while Howard and Rajesh use the latest technology to try to find the house being used in "America's Next Top Model."

The Lizard-Spock Expansion

Howard and Leonard's friendship could be at an end when Leonard steals Howard's new woman from him.

The White Asparagus Triangulation

Sheldon tries to help move Leonard's new relationship along, because his track record with women has been less than successful. But will he cause more trouble than good?

The Vartabedian Conundrum

Leonard is the last one to realize that Stephanie has moved in with him. And when he finds out, he becomes worried that they are moving too fast

The Bath Item Gift Hypothesis

Much to Lenonard's disappointment, Penny suddenly develops an interest in science when a sexy new physicist joins the lab. Meanwhile, Sheldon struggles to find an appropriate Christmas gift for Penny.

The Killer Robot Instability

Howard becomes depressed after Penny makes a cruel statement about his love life, while the rest of the guys prepare for a grudge killer robot duel against an obnoxious colleague at the university.

The Friendship Algorithm

Sheldon tries to make friends with a despised colleague, with the hopes that it will get him access to a coveted computer in the lab.

The Financial Permeability

Penny cannot afford to pay her rent, so Sheldon and Leonard each come up with unique ways to help her out.

The Maternal Capacitance

Sheldon hits it off with Leonard's psychoanalyst mother, but she drives Leonard and Penny to the bottle.

The Cushion Saturation

Howard hooks up with Leslie, while Penny accidentally ruins Sheldon's spot on the couch.

The Terminator Decoupling

On a train trip to San Francisco, the boys debate on how to meet sci-fi star Summer Glau, who is on board with them.

The Work Song Nanocluster

Sheldon's assistance with Penny's home-based business leads to disaster.

The Dead Hooker Juxtaposition

Penny becomes jealous when a gorgeous new neighbor attracts the guys' attention.

The Hofstadter Isotope

Leonard is so upset when a friend from the comic book store begins dating Penny that he convinces Howard and Raj to take him to a bar so that he can pick up a woman of his own.

The Vegas Renormalization

After being dumped by Leslie, Howard heads to Las Vegas with Leonard and Raj, leaving Penny to deal with Sheldon, who has locked himself out of the apartment.

The Classified Materials Turbulence

Penny's second date with Stuart has significant implications for Leonard. Howard enlists the guys' help with one of his NASA projects.

The Monopolar Expedition

Penny gets upset when she finds out Leonard and the guys plan to work at the North Pole for the summer.

Staffel 3 - Alle Folgen mit Kaley Cuoco

The Electric Can Opener Fluctuation

After returning from the North Pole, a conflict among the guys sends Sheldon back to Texas and interferes with Leonard's reunion with Penny.

The Jiminy Conjecture

Leonard and Penny's first night together goes awkwardly. Sheldon and Howard wager on the species of a cricket.

The Gothowitz Deviation

Sheldon attempts to covertly alter Penny's habits, while Howard and Raj try their luck meeting women at a Goth-style club.

The Pirate Solution

Raj must find a new job or be sent back to India, but Sheldon has a solution, which leaves Leonard and Penny dealing with Howard as third wheel.

The Creepy Candy Coating Corollary

Wolowitz begs Penny to set him up with one of her friends; Sheldon seeks payback against Wil Wheaton.

The Cornhusker Vortex

To blend in better with several of Penny's friends from back home, Leonard learns about football...from Sheldon. Meanwhile, a loss in a kite war threatens to end Raj and Howard's friendship.

The Guitarist Amplification

Sheldon is forced to play peacemaker when Leonard and Penny have an argument, mainly because their fighting is bringing back repressed childhood memories.

The Adhesive Duck Deficiency

Penny separates her shoulder in the bathtub, and is forced to turn to Sheldon for help. Meanwhile, the rest of the guys accidentally get stoned in the desert while waiting for a meteor shower

The Vengeance Formulation

Sheldon vows payback after Kripke humiliates him on the radio. Howard gets advice concerning his relationship with Bernadette...from "Battlestar Galactica's" Katee Sackhoff.

The Gorilla Experiment

Sheldon attempts to help Penny understand physics to impress Leonard, and Wolowitz becomes jealous when his new girlfriend takes an interest in Leonard's research.

The Maternal Congruence

Leonard's mother makes a visit to his dismay and Sheldon's delight.

The Psychic Vortex

Raj talks Sheldon into being his wingman at a university mixer. Leonard has trouble dealing with Penny consulting a psychic.

The Bozeman Reaction

When their apartment is robbed, Leonard and Sheldon turn to their friends to create a state-of-the-art security system.

The Einstein Approximation

Sheldon acts even more strangely when he is stumped by a difficult physics question, so he is forced to resort to Einstein-inspired measures to unclutter his mind and solve the problem.

The Large Hadron Collision

When Leonard must travel to Switzerland on Valentine's Day to visit the CERN laboratory, Sheldon uses any and all means to be his guest instead of Penny.

The Excelsior Acquisition

Sheldon misses an opportunity to get Stan Lee's autograph because he has to make an appearance in traffic court.

The Precious Fragmentation

When the guys find an actual ring from the "Lord of the Rings" trilogy at a garage sale, their friendship is threatened.

The Pants Alternative

Sheldon needs the gang's help in overcoming his fear of public speaking when he receives an award.

The Wheaton Recurrence

Sheldon takes on his newest nemesis, Star Trek's Wil Wheaton, in bowling. Leonard and Penny's relationship comes to a crossroad.

The Spaghetti Catalyst

With Leonard and Penny now broken up, Sheldon is forced to go behind Leonard's back to spend time with her.

The Plimpton Stimulation

Sheldon and Penny are both disturbed and disappointed when Leonard hooks up with Sheldon's visiting female physicist friend.

The Staircase Implementation

After Leonard and Sheldon get in a fight over the thermostat, Leonard goes to Penny's apartment and tells her about how he met Sheldon for the first time and how they became roommates...and what happened to the elevator.

The Lunar Excitation

Penny has a night of angry, drunken sex with Leonard, which Leonard soon misinterprets as something other than a mistake. Meanwhile, Wolowitz and Koothrappali search for Sheldon's perfect match online.

Staffel 4 - Alle Folgen mit Kaley Cuoco

The Robotic Manipulation

Penny ends up tagging along on Sheldon's first-ever date with Amy Farrah Fowler, while Wolowitz finds an unusual use for the new robotic arm he's created.

The Cruciferous Vegetable Amplification

When Sheldon calculates the technology to download his consciousness into a robot won't be invented soon enough, he desperately tries to find a way to increase his lifespan.

The Zazzy Substitution

Following his breakup with Amy, the gang becomes concerned with Sheldon's obsessive search for non-human companionship, and they call his mother to intervene.

The Hot Troll Deviation

Wolowitz tries to get help from Penny, Katie Sackhoff and George Takei to get back together with Bernadette, while Raj and Sheldon quarrel over office space as they work together on a project

The Desperation Emanation

Sheldon is scared that he is in a relationship when Amy asks him to meet her mother, and Leonard asks Wolowitz and Bernadette to set him up because he is the only person in the group without a girlfriend.

The Irish Pub Formulation

Leonard tries to keep everyone from finding out that he spent the night with Raj's sister, but Sheldon finds out and concocts an elaborate story to help him keep the secret from Raj.

The Apology Insufficiency

An FBI agent interviews everyone when Howard needs to obtain a security clearance. Sheldon is beside himself when Howard refuses to accept his apology.

The 21-Second Excitation

The guys camp out all night waiting to see a new movie while Penny and Bernadette invite Amy to her first slumber party.

The Boyfriend Complexity

Penny asks Leonard to pose as her boyfriend when her father visits. Howard, Raj, and Bernadette are up all night looking through a telescope.

The Alien Parasite Hypothesis

Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.

The Justice League Recombination

The guys enter a costume contest as members of the Justice League...and convince Penny's new boyfriend to join them.

The Bus Pants Utilization

Leonard has an idea for a new smartphone app and asks the guys for help. However, Sheldon tries to take over the project, and Leonard fires him.

The Love Car Displacement

Tension runs high as the entire gang spends the weekend together at a science convention.

The Thespian Catalyst

To improve his skills as an instructor, Sheldon asks Penny to give him acting lessons. Meanwhile, Raj begins having impure fantasies about Bernadette.

The Benefactor Factor

To secure needed funding for their school, Sheldon convinces Leonard to get friendly with a wealthy benefactor.

The Cohabitation Formulation

Bernadette makes Howard choose between herself and his mother, and how will Penny react when Leonard begins seeing Raj's sister again when she's back in town?

The Toast Derivation

Sheldon becomes concerned when everybody begins to hang out at Raj's apartment and discovers Leonard is the center of the group.

The Prestidigitation Approximation

Priya forces Leonard to choose between a relationship with her or a friendship with Penny. A magic trick by Howard has Sheldon fooled.

The Zarnecki Incursion

The gang goes all out to help Sheldon find the person responsible for hacking his online gaming account, but Priya is beginning to get fed up with Leonard's childish behavior.

The Herb Garden Germination

Sheldon and Amy secretly experiment on the gang by spreading rumors. Howard and Bernadette's relationship reaches an important milestone.

The Agreement Dissection

When Priya finds a loophole in the roommate agreement to throw Sheldon out for the night, Penny, Amy, and Bernadette take Sheldon to a nightclub.

The Wildebeest Implementation

While Sheldon invents a three-player chess game, Bernadette uses a double date to spy on Leonard and Priya's relationship, and Raj tries a new drug to treat his social anxiety.

The Engagement Reaction

Howard believes that his mom suffered a heart attack because he told her that he's marrying Bernadette, and Sheldon freaks out over germs after he accidentally drinks Leonard's water.

The Roommate Transmogrification

Raj moves in with Sheldon after hearing Leonard and Priya engage in a Star Trek fantasy in his apartment. Bernadette receives her doctorate, and the gang teases Howard about not having one.

Staffel 5 - Alle Folgen mit Kaley Cuoco

The Skank Reflex Analysis

The gang deals with the fallout from Penny and Raj's night together. Amy counsels Penny when she considers moving back to Nebraska due to her failing acting career. Sheldon takes charge of the paintball team.

The Infestation Hypothesis

Sheldon has health issues with Penny's new chair. Amy gets inadvertently caught in the middle of a fight between Sheldon and Penny. Leonard tries to add some spice to his long-distance relationship with Priya.

The Pulled Groin Extrapolation

While Sheldon stays at home to play with his new train set, Leonard and Amy learn a lot about each other when he goes as her "plus one" to a wedding. Howard and Bernadette spend the weekend with his mother.

The Wiggly Finger Catalyst

Penny sets up Raj with a deaf friend, not knowing that she's actually a gold digger, and Sheldon decides to let his minor decisions rest on the roll of the dice.

The Russian Rocket Reaction

Sheldon takes offense when Leonard wants to attend a party with Star Trek's Wil Wheaton and Brent Spiner, and Bernadette tries to block Howard's opportunity to go into outer space.

The Rhinitis Revelation

Sheldon is upset when his mom comes to visit but refuses to cook for him and attend physics lectures.

The Good Guy Fluctuation

Sheldon tries to get into the spirit of Halloween by trying to scare the guys after they prank him. A comic book artist is interested in Leonard.

The Isolation Permutation

Amy is hurt when Bernadette and Penny goes bridesmaid dress shopping without her, so she turns to a reluctant Sheldon for comfort.

The Ornithophobia Diffusion

Sheldon must overcome his fear of birds while Leonard and Penny attempt to hang out together strictly as friends.

The Flaming Spittoon Acquisition

When Stuart from the comic book store asks Amy on a date, Sheldon considers having a more serious relationship with her. Meanwhile, the guys become obsessed with a new card game involving Wild West heroes and witches.

The Speckerman Recurrence

Leonard must confront the man who bullied him in high school, while Penny realizes she did her fair share of tormenting in the past.

The Shiny Trinket Maneuver

Penny must help Sheldon work on his relationship with Amy when he trivializes one of her accomplishments. Bernadette's dislike of children bothers Howard.

The Recombination Hypothesis

Leonard and Penny contemplate reviving their romantic relationship. Sheldon's attempt to order Star Trek memorabilia doesn't go as planned.

The Beta Test Initiation

Leonard and Penny develop a system to insure their dates go smoothly. Raj finally finds a woman he can talk to - the virtual assistant on his mobile phone.

The Friendship Contraction

Leonard signs out of his roommate agreement, reducing himself and Sheldon to mere acquaintances, while Howard tries to think of a cool astronaut nickname for himself.

The Vacation Solution

When the university forces Sheldon to use vacation days, he decides to hang out in Amy's lab. Bernadette wants Howard to sign a prenuptial agreement.

The Rothman Disintegration

Sheldon battles Barry Kripke for a coveted office at the university. Penny receives a very unusual gift from Amy.

The Werewolf Transformation

Sheldon wreaks havoc when he tries to get a haircut from his regular barber, who is ill. Howard runs into a few problems with astronaut training.

The Weekend Vortex

Sheldon must choose between joining Amy at her aunt's birthday party or playing videogames all weekend with the guys.

The Transporter Malfunction

Raj gets quite a surprise when he asks his parents to set him up on a date. Penny buys Leonard and Sheldon a pair of Star Trek keepsake collectibles, not knowing the effect it would have on Sheldon.

The Hawking Excitation

Sheldon uses any and all means to meet his hero, Dr. Stephen Hawking.

The Stag Convergence

The guys throw Howard a bachelor party, and some embarrassing details about his life get posted on the Internet.

The Launch Acceleration

Howard faces double trouble when NASA moves up his launch and he has to meet Bernadette's father. Some awkward pillow talk by Leonard may change his relationship with Penny.

The Countdown Reflection

The gang scrambles to provide Howard and Bernadette a wedding before Howard's mission into space.

Staffel 6 - Alle Folgen mit Kaley Cuoco

The Date Night Variable

Raj crashes Sheldon and Amy's second anniversary and interferes in Leonard and Penny's relationship. Howard gets caught in the middle of an argument between Bernadette and his mother.

The Decoupling Fluctuation

Penny continues to have doubts about her relationship with Leonard. Meanwhile, Howard becomes the target of practical jokes on the space station.

The Higgs Boson Observation

When Sheldon hires a female grad student to assist him, a jealous Amy asks Penny to help her spy on them. On the space station, Howard begins behaving erratically.

The Re-Entry Minimization

Howard is offended when his return from space is met with little fanfare. Penny and Amy take on Sheldon and Leonard during game night.

The Holographic Excitation

While Raj plans Stuart's Halloween party at the comic book store, Howard annoys the rest of the gang by constantly talking about space, and Penny tries to take more of an interest in Leonard's work.

The Extract Obliteration

Penny enrolls in a college class and keeps it a secret from Leonard. Sheldon causes conflict with Dr. Stephen Hawking over an online game.

The Habitation Configuration

Howard makes a decision whether or not to move out of his mother's house, while Sheldon is caught in the middle of an argument between Amy and Wil Wheaton.

The 43 Peculiarity

Leonard feels threatened after hearing about Penny's study partner at school, while Howard and Raj become determined to find out one of Sheldon's secrets.

The Parking Spot Escalation

The gang are drawn into a fight between Howard and Sheldon over Sheldon's vacant parking spot at the university.

The Fish Guts Displacement

Howard tries to bond with Bernadette's father during a fishing trip. When Sheldon is obligated to take care of a sick Amy, she finds ways to take advantage of the situation.

The Santa Simulation

The girls take Raj out to a nightclub to find him a date. A game of Dungeons and Dragons rekindle old memories of Santa for Sheldon.

The Egg Salad Equivalency

When Penny finds out Alex has a crush on Leonard, Sheldon gets himself and the rest of the guys in trouble with Human Resources whilst trying to solve the problem.

The Bakersfield Expedition

The guys are stranded in the middle of nowhere when Leonard's car is stolen on the way to the Bakersfield Comic-Con. Back home, the girls try to figure out why the guys are so fascinated with comic books.

The Cooper/Kripke Inversion

Sheldon is forced to work with Kripke on a project and must concoct an elaborate lie when he can't hold up his end of the work. Howard and Raj get superhero figurines made of themselves.

The Spoiler Alert Segmentation

Leonard moves in with Penny after a fight with Sheldon, which causes Amy to want to move in with Sheldon. Meanwhile, Raj has a frightening experience with Howard's mother.

The Tangible Affection Proof

Sheldon gets Alex to buy a Valentine's Day gift for Amy. Leonard and Penny and Howard and Bernadette have a disastrous dinner together. Raj and Stuart host a "Lonely People" party at the comic book store.

The Monster Isolation

Raj falls apart after his date sneaks out on him, and Sheldon reluctantly returns the favor after Penny helps him out with his "Fun With Flags" program.

The Contractual Obligation Implementation

Leonard, Sheldon and Howard give lectures on science to junior high students. The girls ditch work to go to Disneyland. Raj devises a date for Lucy that fixes their social anxiety problems.

The Closet Reconfiguration

Howard becomes upset when Sheldon finds a letter from his estranged father whilst cleaning out his and Bernadette's closet.

The Tenure Turbulence

Leonard, Sheldon, Raj and Kripke battle for tenure at the university.

The Closure Alternative

Amy tries to help a depressed Sheldon find closure when one of his favorite TV shows is canceled. Raj becomes paranoid when he finds Lucy's blog.

The Proton Resurgence

Bernadette and Howard offer to watch Raj's dog and live to regret it. Leonard and Sheldon hire their favorite childhood star to make an appearance.

The Love Spell Potential

A date between Raj and Lucy takes both of them out of their comfort zones. After a trip to Las Vegas goes awry, the girls join in on a Dungeons and Dragons game, which causes Amy and Sheldon to re-evaluate their relationship.

The Bon Voyage Reaction

Penny is thrown for a loop when Leonard is offered a job overseas, but the news is an even bigger shock to Sheldon. Raj and Lucy's relationship comes to a crossroad.

Staffel 7 - Alle Folgen mit Kaley Cuoco

The Hofstadter Insufficiency

Sheldon and Penny bond over missing Leonard. Howard tries to help Raj get over his breakup with Lucy. Amy and Bernadette take a trip together to a biology convention.

The Deception Verification

Sheldon feels betrayed when Leonard returns from the North Sea and wants to spend his time with Penny instead of him. Howard's latest foray into helping his mother has some disastrous side effects.

The Scavenger Vortex

The gang get competitive when they are forced to take part in Raj's scavenger hunt.

The Raiders Minimization

Sheldon gets mad at Amy for ruining one of his favorite movies, Raj and Stuart try to make their online dating profiles more appealing, and Leonard tries to play the sympathy card with Penny.

The Workplace Proximity

After a fight with Bernadette, Howard ends up on Raj's couch. Sheldon and Amy clash when Amy takes a job at the university.

The Romance Resonance

Howard tries to do something special to celebrate the anniversary of his first date with Bernadette. Sheldon is conflicted when he makes a major scientific breakthrough but some details have to be corrected.

The Proton Displacement

Sheldon seeks payback when Arthur "Professor Proton" Jeffries asks Leonard for help on a project instead of him. Raj gets upset at Howard for crashing his night with the girls.

The Itchy Brain Simulation

Sheldon demands Leonard make up for a mistake from their past. Penny confronts Raj's ex-girlfriend, Lucy.

The Thanksgiving Decoupling

The gang spend Thanksgiving at Mrs. Wolowitz's house. Howard tries to bond with his father-in-law, and a mistake from Penny's past comes back to haunt her.

The Discovery Dissipation

Leonard has to deal with the fallout of disproving Sheldon's new scientific discovery. Raj spends a week at Howard and Bernadette's apartment.

The Cooper Extraction

While Sheldon is at home in Texas, the rest of the gang decorate for Christmas and think about how much he has affected their lives.

The Hesitation Ramification

After Leonard tries to help Penny following a failed role on a TV show, she makes an important decision. Meanwhile, Raj and Stuart try to practice their social skills, and Sheldon navigates the intricacies of being funny.

The Occupation Recalibration

Sheldon tries to relax after he is forced to take a vacation. Leonard struggles to be supportive of Penny after she quits her job. Amy receives unwanted attention from a co-worker. Bernadette seeks Stuart's help in replacing one of Howard's comic books.

The Convention Conundrum

When the guys can't get hold of any Comic-Con tickets, Sheldon tries to hold his own convention and ends up spending a wild night with James Earl Jones. Meanwhile, the girls try to feel more mature by going to a fancy hotel for tea.

The Locomotive Manipulation

Sheldon and Amy take a train ride to Napa Valley with Howard and Bernadette on Valentine's Day. Leonard and Penny take Raj's dog to the vet when she accidentally eats some chocolate.

The Table Polarization

Leonard's purchase of a dining room table causes Sheldon to reevaluate the changes in his life. Meanwhile, Howard is offered a chance to go back to space and Bernadette struggles with whether or not to encourage him.

The Friendship Turbulence

After arguing with Sheldon, Howard tries to make amends by taking him to NASA headquarters in Houston. Penny has second thoughts about quitting her waitressing job when her car dies. Amy gets involved in trying to find Raj a date.

The Mommy Observation

When Sheldon visits his mother in Houston, he is forced to confront a new reality. Back in Pasadena, the rest of the gang reluctantly take part in Raj's Murder Mystery party.

The Indecision Amalgamation

While Raj is wracked with guilt when he tries to date Lucy and Emily at the same time, Penny wrestles with whether to take a role in a cheesy movie and Sheldon is torn trying to choose between two gaming systems.

The Relationship Diremption

Penny tries to help Sheldon when he reconsiders his "relationship" with String Theory. During a dinner with Howard and Bernadette, Raj discovers Howard once embarrassed himself on a date with Emily.

The Anything Can Happen Recurrence

When Sheldon tries to be spontaneous, it leads to unexpected friction between the girls. Meanwhile, Raj seeks Howard's help in preparing for a date with Emily.

The Proton Transmogrification

As the gang celebrate Star Wars Day, Sheldon has difficulty dealing with the recent death of Arthur "Professor Proton" Jeffries.

The Gorilla Dissolution

Penny gets fired from her movie and takes a serious look at her life. Raj sees Emily on a date with another man at the movies. Howard and Bernadette have to take care of his mother after she breaks her leg.

The Status Quo Combustion

Sheldon gets upset about his career, the destruction of the comic book store and Leonard and Penny's future living arrangements. Howard and Bernadette struggle to keep hold of a caregiver for Mrs. Wolowitz.

Staffel 8 - Alle Folgen mit Kaley Cuoco

The Locomotion Interruption

Sheldon's trip comes to an end when he is robbed, Penny interviews for a job at Bernadette's company, and Howard is weirded out by his mother's relationship with Stuart.

The Junior Professor Solution

Sheldon is forced to teach a class as a Junior Professor. Meanwhile, Amy plays both sides when tension arises between Penny and Bernadette.

The First Pitch Insufficiency

Howard becomes nervous after NASA asks him to throw out the first pitch at a Los Angeles Angels game. Meanwhile, Leonard and Penny try to prove Sheldon wrong when he says that he and Amy have a 'superior' relationship.

The Hook-up Reverberation

Raj's honesty about his past comes back to haunt him after Emily takes a dislike to Penny. Meanwhile, the guys consider investing in the comic book store.

The Focus Attenuation

The girls head to Las Vegas, while the guys try to invent something cool, but only come up with new ways to procrastinate.

The Expedition Approximation

Sheldon and Raj test whether they could survive a dark-matter research expedition in a salt mine by simulating the conditions in a steam tunnel. Meanwhile, Leonard and Penny seek advice from Howard and Bernadette when they argue about money.

The Misinterpretation Agitation

The guys befriend one of Penny's clients when he shows up at her apartment. Meanwhile, Bernadette gets upset when Amy torpedoes an article about her for a local magazine.

The Prom Equivalency

The girls decide to re-enact their high school proms with the guys. While Sheldon feels under pressure to commit to his relationship with Amy, Howard worries about who Stuart will bring as his date.

The Septum Deviation

Sheldon panics when Leonard announces he has to go into the hospital for surgery. Raj discovers his parents have divorced.

The Champagne Reflection

While Sheldon retires "Fun With Flags", Leonard, Howard and Raj look for something significant in a dead professor's research, and Bernadette finds out what her colleagues really think of her.

The Clean Room Infiltration

Amy hosts a traditional Victorian Christmas Eve dinner as Raj's father comes to visit, while the guys try to shoo out a bird they let into the university clean room.

The Space Probe Disintegration

Raj worries a probe he designed will not work in outer space, while Leonard and Sheldon go shopping with Penny and Amy.

The Anxiety Optimization

When Sheldon becomes stuck in a rut with his work, the gang try to help him by raising his stress levels. Howard teases Raj with a game called "Emily or Cinnamon."

The Troll Manifestation

Leonard and Sheldon defend themselves against criticism from an online bully, while the girls confront embarrassing moments from their pasts.

The Comic Book Store Regeneration

Howard receives some shocking news as everyone prepares for the re-opening of the comic book store. Meanwhile, Penny tries to teach Sheldon how to "let it go," but can't follow her own advice when she learns something infuriating about Amy.

The Intimacy Acceleration

Sheldon and Penny agree to participate in an unusual experiment. Leonard, Amy, Raj and Emily spend the evening trying to escape a room with a "zombie". Howard and Bernadette run into trouble at the airport after returning from Mrs. Wolowitz's funeral.

The Colonization Application

A trip to the pet store ends in a fight after Amy learns Sheldon has applied for a one-way mission to colonize Mars. Meanwhile, Leonard surprises Penny with a very "adult" purchase, and Raj gets into trouble when he snoops around Emily's apartment.

The Leftover Thermalization

Tension arises when a magazine fails to mention Leonard in an article about the paper he co-wrote with Sheldon, and a blackout at Mrs. Wolowitz's home leads to a final family dinner in her honor.

The Skywalker Incursion

When Leonard and Sheldon are invited to speak at UC Berkeley, they take a detour to try and meet one of their idols. Meanwhile, while cleaning out Mrs. Wolowitz's house, a ping pong battle ensues when Howard and Bernadette argue over the fate of his TARDIS.

The Fortification Implementation

Howard meets the half-brother he never knew he had. Penny is invited to appear on Wil Wheaton's podcast.

The Communication Deterioration

When Raj is asked to create a message on the off chance a NASA mission discovers alien life, the guys fight over what he should do, while Penny contemplates returning to acting.

The Graduation Transmission

Howard questions his engineering abilities when he and Sheldon can't get a toy drone to fly. A cancelled flight nearly prevents Leonard from giving the commencement address at his former high school. Raj pits his parents against each other when his father cuts him off financially.

The Maternal Combustion

Personalities collide when Leonard and Sheldon's mothers meet for the first time. Bernadette reaches her limit with Howard and Stuart.

The Commitment Determination

As Sheldon presses Leonard and Penny to set a wedding date, he encounters major changes in his relationship with Amy. Meanwhile, Raj wonders if he should break up with Emily, and Howard and Bernadette struggle to ask Stuart to move out.

Staffel 9 - Alle Folgen mit Kaley Cuoco

The Matrimonial Momentum

Penny struggles with Leonard's confession that he kissed another woman as they prepare to get married in Las Vegas. Meanwhile, Sheldon doesn't know what to do after Amy pushes pause on their relationship.

The Separation Oscillation

Leonard and Penny try to work through their marital issues. Meanwhile, Sheldon films a special episode of "Fun with Flags" after his breakup with Amy, and Bernadette feels guilty about withholding a secret from Penny.

The Bachelor Party Corrosion

The guys's skills are put to the test when they get a flat tire on the way to Mexico for Leonard's bachelor party. The girls throw Penny a mini-bachelorette party.

Penny Hofstadter

The 2003 Approximation

An impending change to his living arrangements inspires Sheldon to revert to 2003, before he met Penny and Leonard. Raj and Howard form a band for the comic book store.

The Perspiration Implementation

Kripke expresses interest in Amy while leading a fencing lesson for the guys. Meanwhile, Stuart seeks help from the girls in getting more women interested in the comic book store.

The Helium Insufficiency

Leonard and Sheldon go to great lengths to secure the helium they need during a nation-wide shortage. Meanwhile, the rest of the gang try to find Amy a new boyfriend on a dating app.

Penny Hofstadter

The Spock Resonance

Wil Wheaton interviews Sheldon for a Star Trek documentary where he reveals the ring and his plan to propose to Amy. Bernadette wants to start renovating the house and the topic of starting a family together with Howard is brought up.

The Mystery Date Observation

Sheldon, Howard and Raj post an ad online to find a new girlfriend for Sheldon. Penny and Bernadette decide to spy when Amy is secretive about who she is dating.

The Platonic Permutation

On Thanksgiving, Sheldon and Amy try to spend time together as friends and go to an aquarium, Howard reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily, and Penny discovers that Leonard knows more about her than she thought.

The Earworm Reverberation

Sheldon has a revelation when he realizes why a song was stuck in his head. Meanwhile, Amy invites Dave over for dinner despite their previously awkward date, and Howard and Raj become obsessed with a fan of their band.

The Opening Night Excitation

Leonard, Howard and Raj have to decide who will take their extra Star Wars movie ticket, while Sheldon plans something special for Amy's birthday.

The Sales Call Sublimation

Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist on her behalf to make a sale. Meanwhile, Sheldon and Raj collaborate on an astronomical discovery, and Howard and Bernadette's happiness is short-lived after Stuart moves out.

Kaley Cuoco als Penny

Autor - November 11, 2012

Kaley Cuoco als Penny
Kaley Cuoco als Penny

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