The Big Bang Theory

  • Score 8.8
  • Premiered: Sep 2007
  • Episodes: 267
  • Followers: 54,9k
  • Rank #2
  • Running
  • CBS
  • Monday at 8

Seasons:

You need to be logged in to mark episodes as watched. Log in or sign up.

Season 5 Discuss
5x1
The Skank Reflex Analysis
Air date
Sep 22, 2011
Penny is worried with how damaged her friendship with the guys will be in the aftermath of her sleeping with Raj while Sheldon becomes the leader of the paintball team.
5x2
The Infestation Hypothesis
Air date
Sep 22, 2011
A fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya.
5x3
The Pulled Groin Extrapolation
Air date
Sep 29, 2011
Leonard and Amy get to know each other better, while Howard and Bernadette spend the weekend with Mrs. Wolowitz.
5x4
The Wiggly Finger Catalyst
Air date
Oct 06, 2011
Penny plays Matchmaker for Raj, which results in him finding a girl he is comfortable talking to.
5x5
The Russian Rocket Reaction
Air date
Oct 13, 2011
Sheldon and Leonard get invited to a party at Wil Wheaton's house, and Howard gets an out-of-this-world opportunity.
5x6
The Rhinitis Revelation
Air date
Oct 20, 2011
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.
5x7
The Good Guy Fluctuation
Air date
Oct 27, 2011
A cute comic book artist puts Leonard and Priya’s relationship to the test, while Sheldon tries to scare the guys for Halloween.
5x8
The Isolation Permutation
Air date
Nov 03, 2011
Amy becomes heartbroken when she discovers that Penny and Bernadette went wedding dress shopping without her.
5x9
The Ornithophobia Diffusion
Air date
Nov 10, 2011
Leonard and Penny try hanging out as friends on a 'non-date', but end up purposely ruining each others chances with perspective dates. Meanwhile, Sheldon enlists the help of Bernadette and Amy to overcome his fear of birds.
5x10
The Flaming Spittoon Acquisition
Air date
Nov 17, 2011
Sheldon considers taking his relationship with Amy to the next level when Stuart from the comic book store asks her out on a date.
5x11
The Speckerman Recurrence
Air date
Dec 08, 2011
Leonard must face his fears after being contacted by his high school tormentor.
5x12
The Shiny Trinket Maneuver
Air date
Jan 12, 2012
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.
5x13
The Recombination Hypothesis
Air date
Jan 19, 2012
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.
5x14
The Beta Test Initiation
Air date
Jan 26, 2012
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 phone. Meanwhile, .. show full overview
5x15
The Friendship Contraction
Air date
Feb 02, 2012
Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Wolowitz tries to pick his astronaut nickname.
5x16
The Vacation Solution
Air date
Feb 09, 2012
When Sheldon is forced to take his vacation, he goes to work with Amy in her neurobiology lab.
5x17
The Rothman Disintegration
Air date
Feb 16, 2012
Penny is horrified when Amy gives her a gift: a huge, quite horrible painting of the two of them. With no good way to avoid displaying it, she only hangs it up when Amy is over. When Amy .. show full overview
5x18
The Werewolf Transformation
Air date
Feb 23, 2012
Sheldon becomes agitated when his regular barber is out sick. Astronaut training causes Howard to reconsider wanting to go into space. Penny beats Leonard in chess, the first time she plays.
5x19
The Weekend Vortex
Air date
Mar 08, 2012
Sheldon must choose between joining Amy at her aunt's birthday party or playing videogames all weekend with the guys.
5x20
The Transporter Malfunction
Air date
Mar 29, 2012
Penny buys Leonard and Sheldon “Star Trek” collectibles as a thank-you, leading Sheldon to be haunted by Mr. Spock. Meanwhile, Raj decides he has met the “Future Mrs. Koothrappali” after his parents set him up on a date.
5x21
The Hawking Excitation
Air date
Apr 05, 2012
When Wolowitz gets to work with Stephen Hawking, Sheldon is willing to do anything to meet his hero.
5x22
The Stag Convergence
Air date
Apr 26, 2012
After the guys throw Howard a bachelor party, Bernadette reconsiders marrying him after learning about his sexual history.
5x23
The Launch Acceleration
Air date
May 03, 2012
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 the bedroom.
5x24 Season finale
The Countdown Reflection
Air date
May 10, 2012
The fifth season ends with Howard and Bernadette deciding to get married before his NASA mission, causing the gang to scurry into overdrive in an effort to stage the wedding. NASA astronaut Mike Massimino has a cameo as himself.

If there are missing episodes or banners (and they exist on TheTVDB) you can request an automatic full show update:

Request show update

If you like this show, you may also enjoy: