Seinfeld is arguably the greatest sitcom of all-time. There are countless classic episodes to choose from, whether it be the shocking "The Contest", the hilarious "The Marine Biologist", or dozens more. Not every episode of Seinfeld worked though. "The Puerto Rican Day" was so offensive that it was pulled after its initial airing, and the series finale as ridiculed as being one of the most disappointing last episodes in TV history. However, one Seinfeld episode is either one of the series' best or worst, depending on who you talk to. In the ninth and final season, wanting to try something new, writers came up with "The Betrayal", an episode whose stories are told in reverse.