Leonard Hofstadter and Sheldon Cooper are both brilliant physicists working at Caltech in Pasadena, California. They are colleagues, best friends, and roommates, although in all capacities their relationship is always tested primarily by Sheldon's regimented, deeply eccentric, and non-conventional ways. They are also friends with their Caltech colleagues mechanical engineer Howard Wolowitz and astrophysicist Rajesh Koothrappali. The foursome spend their time working on their individual work projects, playing video games, watching science-fiction movies, or reading comic books. As they are self-professed nerds, all have little or no luck with popular women. When Penny, a pretty woman and an aspiring actress originally from Omaha, moves into the apartment across the hall from Leonard and Sheldon's, Leonard has another aspiration in life, namely to get Penny to be his girlfriend. Written by
When beauty meets the brains.
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Did You Know?
Each of the male characters has a signature clothing article worn in virtually every episode: Sheldon - t-shirts worn over long-sleeve shirts; Leonard - hoodies worn over a T-shirt and under a jacket; Raj - sweater-vest worn over a shirt and usually under some type of outerwear; Howard - turtlenecks/dickies worn under some type of outerwear. Howard usually has a pin on the left side of his turtleneck collar of the head of a "Space Alien", and he wears large belt buckles. See more
In one of the episodes when Sheldon moves in with Raj, Raj is watching an Indian movie. The actress of that movie is referred to as 'Aishvarya Rai', but it's actually 'Amisha Patel'. See more
[repeated line when Sheldon tells a sarcastic joke
One of the final cards to appear in the credit sequence is the vanity card for Chuck Lorre Productions. In keeping with his practice on "Dharma and Greg" and "Two and a Half Men", there is a different message on the card each week, written by Chuck Lorre himself. See more
History of Everything (The Big Bang Theory Theme)
Music & lyrics by Barenaked Ladies
Performed by Barenaked Ladies
Played during the opening titles See more