Episode Titles: Extract

 You are viewing a list of 1 The Big Bang Theory episode featuring "Extract" in their title.

  • The Extract Obliteration

    Season 6, Episode 6 - The Extract Obliteration
    Aired November 1, 2012

    Penny has started taking a history class at the local college but she doesn't want Leonard to know. Meanwhile, Sheldon worries about his friendship with Stephen Hawking after a game of "Words with Friends".