The Big Bang Theory 2007 | TV Show

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Two nerdy physicists share an apartment and an unlikely friendship with their beautiful neighbor with whom one of them is infatuated.

Premiered: September 24, 2007

Rating: TV-PG

User Rating:4.58 out of 5 (8,996 ratings)

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Season 4, Episode 9 The Boyfriend Complexity

First Aired: November 18, 2010

Penny asks Leonard to lie to her visiting father (Keith Carradine), while Howard, Raj and Bernadette spend all night looking through a telescope.

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The 21-Second Excitation

Season 4, Episode 8

November 11, 2010

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The Alien Parasite Hypothesis

Season 4, Episode 10

December 9, 2010

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