(S03E22) Like I said when we started this whole Retro Squad exercise, the reason why I picked Season Three of Seinfeld is because during this year you really saw the show develop before your eyes from a pokey, single-story, funny, but unremarkable sitcom to a densely-packed, fast-moving, hilarious classic. And the season finale, "The Keys," is a great example of the show's metamorphosis. Jerry and George's dispute over the spare keys, the whole spare key trade-around among the Fab Four, Elaine's secret Murphy Brown spec script, and Kramer's journey to L.A. are all crammed into this 30-minute episode. And there's still room for stand-up bits and a really funny recurring joke.