Bernadette makes Howard choose between herself and his mother, and how will Penny react when Leonard begins seeing Raj’s sister again when she’s back in town?

Megavideo The Big Bang Theory Episodes Online - Season 4, episode 16 - The Cohabitation Formulation

Big Bang Theory Season 4 Episode 16 Megavideo

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

The Big Bang Theory from 2/17/2011.

Promo for the episode 'The Cohabitation Formulation' (S04E16) posted on SpoilerTV.

Amy crushes on one of Penny's dim ex-boyfriends, Zack. Raj and Wolowitz argue over who'd be the better superhero.

When Penny's father visits, she gets Leonard to pretend to still be her boyfriend. Meanwhile, Howard, Raj, and Bernadette spend the night on an astronomy project.

The guys camp out in line to see a print of Raiders of the lost Ark with 21 extra segundos and are outraged to see Wil Wheaton and his friends being allowed to skip the line. Penny and Bernadette invite Amy to their girls night.