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The Big Bang Theory season 4 episode 16

The Cohabitation Formulation

As Wolowitz contemplates taking things with Bernadette to the next level, Leonard rekindles his relationship with Raj’s sister.

The Big Bang Theory: Season 4 Episode 16
The Big Bang Theory: Season 4 Episode 16
The Big Bang Theory: Season 4 Episode 16
The Big Bang Theory: Season 4 Episode 16
The Big Bang Theory: Season 4 Episode 16
The Big Bang Theory: Season 4 Episode 16
The Big Bang Theory: Season 4 Episode 16
The Big Bang Theory: Season 4 Episode 16
The Big Bang Theory: Season 4 Episode 16
The Big Bang Theory: Season 4 Episode 16
Feb. 17, 2011

The Big Bang Theory season 4