The Big Bang Theory

Smart is the new sexy.
Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.
Episodes
Whether on or above Earth, hilarity is outrageously universal in TV's most popular comedy featuring four forward-thinking but socially backward geniuses. Fun discoveries multiply: Leonard learns jealousy is bad for a relationship (with Penny) but science is good for seduction (of Penny). Howard finds life in the International Space Station life is no escape from terrestrial turmoil between his mom and his new wife Bernadette. Raj meets someone special who may be a good match, if he can keep her from fleeing mid-date. And then there's Sheldon. He learns what not to say after facing harassment charges or competing for tenure at work and how Dungeons & Dragons can be the icebreaker his relationship with Amy needs.

1The Date Night Variable
21 minSep 27, 2012★ 7.2
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.

2The Decoupling Fluctuation
21 minOct 4, 2012★ 7.3
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.

3The Higgs Boson Observation
19 minOct 11, 2012★ 7.4
Amy feels threatened when Sheldon hires a young female assistant, and the pressure of being in space takes its toll on Wolowitz.

4The Re-Entry Minimization
21 minOct 18, 2012★ 7.8
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.

5The Holographic Excitation
21 minOct 25, 2012★ 7.5
The gang celebrates Halloween at Stuart’s comic book store. Meanwhile, Leonard seduces Penny with science.

6The Extract Obliteration
21 minNov 1, 2012★ 7.3
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.

7The Habitation Configuration
21 minNov 8, 2012★ 7.3
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.

8The 43 Peculiarity
21 minNov 15, 2012★ 7.8
Raj and Howard try to to figure out why Sheldon disappears at 2:45 every afternoon; jealousy arises in Penny and Leonard's relationship.

9The Parking Spot Escalation
20 minNov 29, 2012★ 7.8
When the University reassigns Sheldon’s parking spot to Wolowitz, their fight affects the whole gang.

10The Fish Guts Displacement
21 minDec 6, 2012★ 7.8
When Amy gets sick, Sheldon tries to nurse her back to health; Wolowitz and his father-in-law plan a fishing trip.

11The Santa Simulation
21 minDec 13, 2012★ 7.5
During a Dungeons and Dragons game, Sheldon revisits Christmas memories; Amy, Penny and Bernadette look for a date for Raj.

12The Egg Salad Equivalency
21 minJan 3, 2013★ 7.6
When Sheldon is accused of sexual harassment, he ends up getting Raj, Leonard and Howard in trouble.

13The Bakersfield Expedition
21 minJan 10, 2013★ 8.0
As the guys don costumes and go on a road trip to a comic book convention, the ladies decide to stay home and try to interpret a comic book.

14The Cooper/Kripke Inversion
20 minJan 31, 2013★ 7.4
Sheldon faces a crisis of confidence when he is forced to work with his nemesis, Barry Kripke; Raj and Howard buy expensive action figures of themselves.

15The Spoiler Alert Segmentation
21 minFeb 7, 2013★ 7.7
A fight between Sheldon and Leonard impacts Amy and Penny's living arrangements; while Howard is away, Raj helps Mrs. Wolowitz out.

16The Tangible Affection Proof
21 minFeb 14, 2013★ 7.5
The guys search for a perfect Valentine's Day gift for their significant others; Stuart and Raj host a "lonely people" party at the comic book store.

17The Monster Isolation
19 minFeb 21, 2013★ 7.6
After a bad date, Koothrappali decides to never leave his apartment; Penny's acting skills impress Sheldon.

18The Contractual Obligation Implementation
20 minMar 7, 2013★ 7.5
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.

19The Closet Reconfiguration
20 minMar 14, 2013★ 7.6
Howard considers whether or not he should open a letter from his father; Penny and Leonard host a "grown-up" cocktail party.

20The Tenure Turbulence
19 minApr 4, 2013★ 7.7
The girls get involved when Leonard, Sheldon and Raj compete for tenure at the University.

21The Closure Alternative
20 minApr 25, 2013★ 7.7
Amy tries to help Sheldon get over his compulsive need for closure when one of his favorite TV shows is canceled; Raj discovers a secret about Lucy.

22The Proton Resurgence
21 minMay 2, 2013★ 7.7
Leonard and Sheldon hire the host (Bob Newhart) of their favorite childhood TV show to perform; Bernadette and Howard run into trouble while dog-sitting for Raj's pet.

23The Love Spell Potential
21 minMay 9, 2013★ 7.6
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.

24The Bon Voyage Reaction
20 minMay 16, 2013★ 7.4
When Leonard receives an exciting opportunity to work overseas, Penny and Sheldon are thrown for a loop. Raj and Lucy's relationship comes to a crossroad.
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