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.
One of the shows that survived the 2007 and 2008 writers strike. The show started in 2007, and the strike started in late 2007. This resulted in season one only being seventeen episodes.
Penny:
Holy crap on a cracker.
Sheldon's trademark knock (3 knocks + name, 3 knocks + name, 3 knocks + name) was not established until later in the first season, however, in a scene that pre-dates the start of the show, he is shown doing that knock sequence.
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 & Greg (1997) and Two and a Half Men (2003), there is a different message on the card each week, written by Chuck Lorre himself.
English, Hindi, Italian, Russian, Mandarin, Klingon