The Big Bang Theory (2006)
A woman who moves into an apartment across the hall from two brilliant but socially awkward physicists shows them how little they know about life outside of the laboratory.
Country United States
Genre Comedy, Romance
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The two main characters (Sheldon Cooper and Leonard Hofstadter) are named after late television producer Sheldon Leonard.
Raj's inability to talk to women except when consuming alcohol is based on an old co-worker of executive producer Bill Prady when he worked at a computer company.
Recurring guest Mayim Bialik is the only cast member to have a PhD. In 2008, she completed her neuroscience studies. She earned her Ph.D. in Neural Biology.
Most of the time, Leonard has no lenses in his glasses.
Kaley Cuoco missed filming two episodes of season four because of a broken leg that was the result of a horseback-riding accident. In her first appearance following the accident, she was filmed standing behind a counter.
Jim Parsons audition for the role of Dr. Sheldon Cooper was so good that creator Chuck Lorre immediately asked Parsons to come in for a second one, because Lorre wanted to be 100% sure Parsons was as brilliant as he seemed. After the 2nd audition went perfectly, Lorre cast Parsons on the spot.
During the third season, the producers became aware of a series called "The Theorists," produced and broadcast in the country of Belarus, that was a virtual copy of The Big Bang Theory (2007). Legal action over copyright infringement would have been futile, since the production company was pretty much owned by the Belarus government. However, a lawsuit turned out not to be necessary, because when word got out that the show was a rip-off, the actors quit and the show was immediately canceled.
When Sheldon plays the theremin, (which is widely regarded as one of the hardest instruments to play) that is actually Jim Parsons playing the theremin.
The actors learned to actually play their instruments for the show. (Amy plays harp, Sheldon plays Theremin and recorder, and Leonard plays Cello)
Sheldon's soothing song, "Soft Kitty", is based on an Australian children's song from Executive Producer Bill Prady's daughter's pre school.
[repeated line when Sheldon tells a sarcastic joke]
[repeated line when someone accuses Sheldon of being crazy]
Sheldon: I'm not crazy. My mother had me tested!
Penny: Holy crap on a cracker.
Leonard Hofstadter: [after a motorcycle accident, which no one asks him about]
My leg is killing me, thanks for asking.
Penny: So, what do you say Sheldon, are we your X-Men?
Sheldon: No. The X-Men were named after the X in Charles Xavier. Since I am Sheldon Cooper, you will be my C-Men.
Howard Wolowitz: [as Sheldon walks away]
Oh, that's not a good name.