Poster of Cast and Crew in The Big Bang Theory - Season 4 - Episode 9 - The Boyfriend Complexity

The Big Bang Theory - Season 4 - The Boyfriend Complexity (Episode 9)

Plot: Penny asks Leonard to lie to her father, while Howard, Raj and Bernadette pull an all-nighter at a telescope.
Episode Aired On:
Thursday, November 18 2010
14 years ago