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The Big Bang Theory season 4 episode 9

The Boyfriend Complexity

Penny asks Leonard to lie to her father, while Howard, Raj and Bernadette pull an all-nighter at a telescope.

The Big Bang Theory: Season 4 Episode 9
The Big Bang Theory: Season 4 Episode 9
The Big Bang Theory: Season 4 Episode 9
The Big Bang Theory: Season 4 Episode 9
The Big Bang Theory: Season 4 Episode 9
The Big Bang Theory: Season 4 Episode 9
The Big Bang Theory: Season 4 Episode 9
The Big Bang Theory: Season 4 Episode 9
The Big Bang Theory: Season 4 Episode 9
The Big Bang Theory: Season 4 Episode 9
Nov. 18, 2010

The Big Bang Theory season 4