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

    • Leonard says to Penny that Sheldon doesn't have hope of making a friend unless he builds him, "out of wood, like Geppetto," referring to his creation of Pinocchio. Both characters are 1883 creations of Carlo Collodi.

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