Season 6, Episode 18 The Contractual Obligation Implementation

First Aired: March 7, 2013

Sheldon, Leonard and Howard promote careers in science before a group of junior-high girls, while Raj readies for a date with Lucy.

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  • Premiered: September 24, 2007
  • Rating: TV-PG
  • User Rating:4.58 out of 5 (8,996 ratings)
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  • Premise: Two nerdy physicists share an apartment and an unlikely friendship with their beautiful neighbor with whom one of them is infatuated. Like the universe after the big bang, the show's popularity expanded, thanks to breakout star Jim Parsons, along with the… (more)

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