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When will be The Big Bang Theory next episode air date? Is The Big Bang Theory renewed or cancelled? Where to countdown The Big Bang Theory air dates? Is The Big Bang Theory worth watching?

Leonard and Sheldon are brilliant physicists - geniuses in the laboratory, but socially challenged everywhere else. Enter beautiful, street-smart neighbor, Penny, who aims to teach them a thing or two about life. Despite their on-again, off-again relationship in the past, Leonard believes he's found true love with Penny. Even Sheldon has found a female companion, entering into a "Relationship Agreement" with neurobiologist Amy Farrah Fowler. In their free time, Leonard and Sheldon continue to enjoy frequent trips to the comic book store and fantasy role-playing games with their ever-expanding universe of friends, including fellow scientists Koothrappali, Wolowitz and Wolowitz's adorable microbiologist wife, Bernadette. (source:

Genres: Comedy
Station: CBS (US)
Rating: 9.26/10 from 150 users
Status: Running
Start: 2007-09-24

The Big Bang Theory Season 5 Air Dates

S05E01 - The Skank Reflex Analysis Air Date: 23 September 2011 00:00 -

Penny worries that she's screwed things up permanently with her friends, while Sheldon takes command of the paintball team.

S05E02 - The Infestation Hypothesis Air Date: 23 September 2011 00:30 -

Fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya.

S05E03 - The Pulled Groin Extrapolation Air Date: 30 September 2011 00:00 -

Leonard and Amy get to know each other better, while Howard and Bernadette spend the weekend with Mrs. Wolowitz.

S05E04 - The Wiggly Finger Catalyst Air Date: 07 October 2011 00:00 -

Raj finally meets a girl he can communicate with.

S05E05 - The Russian Rocket Reaction Air Date: 14 October 2011 00:00 -

Sheldon and Leonard get invited to a party at Wil Wheaton's house, and Howard gets an out-of-this-world opportunity.

S05E06 - The Rhinitis Revelation Air Date: 21 October 2011 00:00 -

Sheldon competes with the gang for his mother's attention when she comes to visit.

S05E07 - The Good Guy Fluctuation Air Date: 28 October 2011 00:00 -

Cute comic book artist puts Leonard and Priya's relationship to the test, while Sheldon tries to scare the guys for Halloween.

S05E08 - The Isolation Permutation Air Date: 04 November 2011 00:00 -

Amy is crushed when Bernadette and Penny go shopping for wedding dresses without her.

S05E09 - The Ornithophobia Diffusion Air Date: 11 November 2011 01:00 -

Leonard and Penny try hanging out alone, and Sheldon must overcome his fear of birds.

S05E10 - The Flaming Spittoon Acquisition Air Date: 18 November 2011 01:00 -

Sheldon considers taking his relationship with Amy to the next level when Stuart from the comic book store asks her out on a date.

S05E11 - The Speckerman Recurrence Air Date: 09 December 2011 01:00 -

Leonard must face his fears after being contacted by his high school tormentor.

S05E12 - The Shiny Trinket Maneuver Air Date: 13 January 2012 01:00 -

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.

S05E13 - The Recombination Hypothesis Air Date: 20 January 2012 01:00 -

Everything might change when Leonard offers Penny a spur of the moment invitation to a romantic dinner for two.

S05E14 - The Beta Test Initiation Air Date: 27 January 2012 01:00 -

Leonard and Penny experiment with dating, while Raj develops a peculiar relationship with his phone's virtual assistant.

S05E15 - The Friendship Contraction Air Date: 03 February 2012 01:00 -

Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Wolowitz tries to pick his astronaut nickname.

S05E16 - The Vacation Solution Air Date: 10 February 2012 01:00 -

When Sheldon is forced to take his vacation, he goes to work with Amy in her neurobiology lab. Meanwhile, Bernadette wants Howard to sign a pre-nup.

S05E17 - The Rothman Disintegration Air Date: 17 February 2012 01:00 -

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.

S05E18 - The Werewolf Transformation Air Date: 24 February 2012 01:00 -

Sheldon's life is turned upside-down after his barber gets sick. Meanwhile, astronaut training causes Wolowitz to rethink his decision to go into space.

S05E19 - The Weekend Vortex Air Date: 09 March 2012 01:00 -

Sheldon chooses to play video games with the guys rather than go with Amy to her aunt's birthday party.

S05E20 - The Transporter Malfunction Air Date: 30 March 2012 00:00 -

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.

S05E21 - The Hawking Excitation Air Date: 06 April 2012 00:00 -

When Wolowitz gets to work with Stephen Hawking, Sheldon is willing to do anything to meet his hero.

S05E22 - The Stag Convergence Air Date: 27 April 2012 00:00 -

Bernadette reconsiders marrying Howard after learning about his sexual history.

S05E23 - The Launch Acceleration Air Date: 04 May 2012 00:00 -

Reschedules Howard's mission, putting the wedding plans in jeopardy. Meanwhile, Leonard says something surprising to Penny in the bedroom.

S05E24 - The Countdown Reflection Air Date: 11 May 2012 00:00 -

When Howard and Bernadette decide they want to be married before his NASA launch, the gang rushes to put on a wedding.

The Big Bang Theory Actors

Pamela Adlon(Halley Wolowitz)

Laura Spencer(Emily Sweeney)

Johnny Galecki(Leonard Leakey Hofstadter)

Jim Parsons(Sheldon Lee Cooper)

Kaley Cuoco(Penny)

Simon Helberg(Howard Joel Wolowitz)

Kunal Nayyar(Rajesh Ramayan Koothrappali)

Mayim Bialik(Amy Farrah Fowler)

Melissa Rauch(Bernadette Marianne Rostenkowski)

Kevin Sussman(Stuart Bloom)

Sara Gilbert(Leslie Winkle)

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