The Big Bang Theory: Season 4

4x16 The Cohabitation Formulation
TV-14

Episode

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

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The Big Bang Theory: Season 4

4x16 The Cohabitation FormulationTV-14

ActorsAll Cast & Crew

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4x16 The Cohabitation Formulation
TV-14

Actors
All Cast & Crew