The Big Bang Theory

Season 2 Episode 13

The Friendship Algorithm

17
Aired Thursday 8:00 PM Jan 19, 2009 on CBS

Trivia

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  • Allusions

    • Penny refers to Sheldon as, "Ichabod," comparing him to Ichabod Crane from Washington Irving's 1820 short story, "The Legend of Sleepy Hollow".

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