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S02E13

The Friendship Algorithm

• 20:00 • CBS

• 2009-01-19

The Friendship Algorithm (S02E13) is the thirteenth episode of season two of "The Big Bang Theo... More The Friendship Algorithm (S02E13) is the thirteenth episode of season two of "The Big Bang Theory" released on Mon Jan 19, 2009. The Big Bang Theory stars and .

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