#5. The Marine Biologist
IMDb Rating: 9.3
George begins dating a woman who believes he is a marine biologist, but his charade quickly goes swimming with the fishes. His monologue at the end of the episode is one of the best in the series. According to IMDb, "the audience response to the end of George's story is regarded by many as one of the longest sustained laughs by the 'Seinfeld' studio audience in the show's history."

