Last episode
The Stockholm Syndrome
s12e24 · 2019-05-17
Ended · US
The Big Bang Theory
CBS Scripted
What it is
The Big Bang Theory is a comedy about brilliant physicists, Leonard and Sheldon, who are the kind of "beautiful minds" that understand how the universe works. But none of that genius helps them interact with people, especially women. All this begins to change when a free-spirited beauty named Penny moves in next door. Sheldon, Leonard's roommate, is quite content spending his nights playing Klingon Boggle with their socially dysfunctional friends, fellow Cal Tech scientists Wolowitz and Koothrappali. However, Leonard sees in Penny a whole new universe of possibilities... including love.
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24 this season · 279 totals06e01 The Date Night Variable 2012-09-28 00:00
The Date Night Variable
With his friends on dates, Raj must face his loneliness. Also, Wolowitz is caught in an argument between Bernadette and his mom, even while he's in space.
s06e02 The Decoupling Fluctuation 2012-10-05 00:00
The Decoupling Fluctuation
When Sheldon learns that Penny is thinking about breaking up with Leonard, he tries to intervene. Meanwhile, in space, the other astronauts pick on Howard.
s06e03 The Higgs Boson Observation 2012-10-12 00:00
The Higgs Boson Observation
Amy feels threatened when Sheldon hires a young female assistant, and the pressure of being in space takes its toll on Wolowitz.
s06e04 The Re-Entry Minimization 2012-10-19 00:00
The Re-Entry Minimization
When Wolowitz returns from space, he doesn't get the hero's welcome he expected. Meanwhile, Game Night turns into a battle of the sexes.
s06e05 The Holographic Excitation 2012-10-26 00:00
The Holographic Excitation
The gang celebrates Halloween at Stuart's comic book store. Meanwhile, Leonard seduces Penny with science.
s06e06 The Extract Obliteration 2012-11-02 00:00
The Extract Obliteration
Sheldon's relationship with Stephen Hawking is threatened over a game of 'Words with Friends,' and Penny secretly enrolls in a class at the local college.
s06e07 The Habitation Configuration 2012-11-09 01:00
The Habitation Configuration
Wolowitz struggles with moving out of his mother's house. Meanwhile, Sheldon is caught in the middle of an argument between Amy and Wil Wheaton.
s06e08 The 43 Peculiarity 2012-11-16 01:00
The 43 Peculiarity
Howard and Raj try to get to the bottom of why Sheldon disappears every afternoon at 2:45. Meanwhile, Leonard and Penny deal with jealousy in their relationship.
s06e09 The Parking Spot Escalation 2012-11-30 01:00
The Parking Spot Escalation
When the University reassigns Sheldon's parking spot to Wolowitz, their fight affects the whole gang.
s06e10 The Fish Guts Displacement 2012-12-07 01:00
The Fish Guts Displacement
Sheldon tries to nurse a sick Amy back to health, while Wolowitz prepares for an upcoming fishing trip with his father-in-law.
s06e11 The Santa Simulation 2012-12-14 01:00
The Santa Simulation
Sheldon revisits some Christmas memories during a game of Dungeons and Dragons, while Penny, Bernadette and Amy try to find a girl for Koothrappali when he joins the girls for ladies' night.
s06e12 The Egg Salad Equivalency 2013-01-04 01:00
The Egg Salad Equivalency
Sheldon gets accused of sexual harassment at the University and winds up getting Leonard, Raj and Wolowitz in trouble.
s06e13 The Bakersfield Expedition 2013-01-11 01:00
The Bakersfield Expedition
While the guys take a road trip to a comic book convention dressed as 'Star Trek: The Next Generation' characters, the girls stay home and try to interpret a comic book.
s06e14 The Cooper/Kripke Inversion 2013-02-01 01:00
The Cooper/Kripke Inversion
Sheldon is forced to work with Barry Kripke and faces a crisis of confidence. Meanwhile, Howard and Raj spend $1,000 on action figures of themselves.
s06e15 The Spoiler Alert Segmentation 2013-02-08 01:00
The Spoiler Alert Segmentation
When Sheldon and Leonard fight, it affects Penny and Amy's living arrangements. Meanwhile, Raj takes care of Mrs. Wolowitz while Howard is away.
s06e16 The Tangible Affection Proof 2013-02-15 01:00
The Tangible Affection Proof
While the guys try to give their significant others the perfect Valentine's Day, Raj and Stuart throw a 'lonely people' party at the comic book store.
s06e17 The Monster Isolation 2013-02-22 01:00
The Monster Isolation
After a terrible date, Koothrappali vows to never leave his apartment. Meanwhile, Penny actually impresses Sheldon with her acting skills.
s06e18 The Contractual Obligation Implementation 2013-03-08 01:00
The Contractual Obligation Implementation
Leonard, Sheldon and Wolowitz speak to junior high girls about careers in science. Meanwhile, Koothrappali plans a date with Lucy.
s06e19 The Closet Reconfiguration 2013-03-15 00:00
The Closet Reconfiguration
Howard struggles with whether or not he should open a letter from his father, and Leonard and Penny throw a 'grown-up' cocktail party at the apartment.
s06e20 The Tenure Turbulence 2013-04-05 00:00
The Tenure Turbulence
Leonard, Sheldon and Raj fight for tenure at the University, and the competition heats up when the girls get involved.
s06e21 The Closure Alternative 2013-04-26 00:00
The Closure Alternative
Sheldon feels lost after one of his favorite TV shows gets canceled too soon and Amy tries to help him get over his compulsive need for closure. Meanwhile, Raj discovers a secret about his new love interest, Lucy.
s06e22 The Proton Resurgence 2013-05-03 00:00
The Proton Resurgence
Sheldon and Leonard hire Professor Proton, the host of their favorite childhood TV show, to perform. Also, Howard and Bernadette run into trouble babysitting Raj's dog.
s06e23 The Love Spell Potential 2013-05-10 00:00
The Love Spell Potential
When the girls' trip to Vegas falls through, the guys invite them to play Dungeons & Dragons, causing Sheldon and Amy's relationship to take an unexpected turn. Meanwhile, Koothrappali and Lucy go on a very awkward date.
s06e24 The Bon Voyage Reaction 2013-05-17 00:00
The Bon Voyage Reaction
New success for Leonard makes Sheldon very jealous and throws Penny for a loop. Meanwhile, Koothrappali pushes Lucy too far in their relationship.