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