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31 years later, George Costanza's greatest Seinfeld line is still 1 of the funniest quotes in sitcom history

Seinfeld's George Costanza is full of great quotes, but his funniest still defines sitcom history decades later.

Where is the “Seinfeld ”cast now? See the sitcom stars over 35 years later

Catch up with the stars of "Seinfeld," including Jerry Seinfeld, Jason Alexander, Julia Louis-Dreyfus, and Michael Richards.