Guest Star: Yeardley Smith

You are viewing a list of Yeardley Smith's 1 appearance on The Big Bang Theory.

  • The Einstein Approximation

    Season 3, Episode 14 - The Einstein Approximation
    Aired February 1, 2010

    When Sheldon's struggle with a physics problem keeps him awake for days on end, he decides to free his mind by taking a menial job. After failing to find gainful employment anywhere else, Sheldon starts work at the Cheesecake Factory with Penny.

    Appeared as Sandy

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