Sep. 24, 2007
30 min.
CBS TV Network

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The Big Bang Theory tv show photo

The Big Bang Theory

Leonard and Sheldon are brilliant physicists, 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.

The Big Bang Theory Season 5 (2011-2012)

5x01 5 5x01 The Skank Reflex Analysis
Penny worries that she’s screwed things up permanently with her friends, while Sheldon takes command of the paintball team.
Sep. 22, 2011
5x02 5 5x02 The Infestation Hypothesis
A fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya.
Sep. 22, 2011
5x03 5 5x03 The Pulled Groin Extrapolation
Leonard and Amy get to know each other better, while Howard and Bernadette spend the weekend with Mrs. Wolowitz.
Sep. 29, 2011
5x04 5 5x04 The Wiggly Finger Catalyst
Raj finally meets a girl he can communicate with.
Oct. 06, 2011
5x05 5 5x05 The Russian Rocket Reaction
Sheldon and Leonard are invited to a party hosted by Wil Wheaton, and Howard is offered a one-in-a-lifetime event.
Oct. 13, 2011
5x06 5 5x06 The Rhinitis Revelation
Sheldon's mother, Mary Cooper, comes to visit, but Sheldon is annoyed that she also spends time with the rest of the gang, instead of catering to his every demand.
Oct. 20, 2011
5x07 5 5x07 The Good Guy Fluctuation
A cute comic book artist puts Leonard and Priya’s relationship to the test, while Sheldon tries to scare the guys for Halloween.
Oct. 27, 2011
5x08 5 5x08 The Isolation Permutation
Amy becomes heartbroken, when she discovers that Penny and Bernadette went wedding dress shopping without her.
Nov. 03, 2011
5x09 5 5x09 The Ornithophobia Diffusion
Leonard and Penny try hanging out alone, and Sheldon must overcome his fear of birds.
Nov. 10, 2011
5x10 5 5x10 The Flaming Spittoon Acquisition
Sheldon considers taking his relationship with Amy to the next level when Stuart from the comic book store asks her out on a date.
Nov. 17, 2011
5x11 5 5x11 The Speckerman Recurrence
Leonard must face his fears after being contacted by his high school tormentor.
Dec. 08, 2011
5x12 5 5x12 The Shiny Trinket Maneuver
Sheldon gets in trouble with Amy when he isn't impressed by her recent accomplishment, and Howard must come to grips with Bernadette's dislike of children.
Jan. 12, 2012
5x13 5 5x13 The Recombination Hypothesis
Leonard, who broke up with Priya, asks Penny out to a spur-of the-moment romantic dinner for two, and the duo contemplates on their relationship.
Jan. 19, 2012
5x14 5 5x14 The Beta Test Initiation
Leonard and Penny deal with the idea of starting a relationship again and Raj finally finds a "woman" he can talk to without being drunk, in the form of Siri on his new iPhone. Meanwhile, ...
Jan. 26, 2012
5x15 5 5x15 The Friendship Contraction
Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Wolowitz tries to pick his astronaut nickname.
Feb. 02, 2012
5x16 5 5x16 The Vacation Solution
When Sheldon is forced to take his vacation, he goes to work with Amy in her neurobiology lab.
Feb. 09, 2012
5x17 5 5x17 The Rothman Disintegration
When an office at the University opens up, Sheldon must compete for it with his archenemy, Kripke. Meanwhile, a gift from Amy makes Penny uncomfortable.
Feb. 16, 2012
5x18 5 5x18 The Werewolf Transformation
Sheldon becomes agitated when his regular barber is out sick. Astronaut training causes Howard to reconsider wanting to go into space.
Feb. 23, 2012
5x19 5 5x19 The Weekend Vortex
Sheldon must choose between joining Amy at her aunt's birthday party or playing videogames all weekend with the guys.
Mar. 08, 2012
5x20 5 5x20 The Transporter Malfunction
Raj may have found his soul mate after his parents set him up on a date. Meanwhile, Sheldon thinks he's going out of his mind when he begins hearing the voice of Spock (Leonard Nimoy) ...
Mar. 29, 2012
5x21 5 5x21 The Hawking Excitation
When Wolowitz gets to work with Stephen Hawking, Sheldon is willing to do anything to meet his hero.
Apr. 05, 2012
5x22 5 5x22 The Stag Convergence
After the guys throw Howard a bachelor party, Bernadette reconsiders marrying him after learning about his sexual history.
Apr. 26, 2012
5x23 5 5x23 The Launch Acceleration
When NASA moves up Howard's mission, he must face his fears and Bernadette's dad, thus putting the wedding plans in jeopardy. Meanwhile, Leonard says something surprising to Penny in ...
May. 03, 2012
5x24 5 5x24 The Countdown Reflection
Wolowitz makes his final preparations to launch into space
May. 10, 2012

Season 5 Characters

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Season 5 Videos

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Season 5 Trivia

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