Trivia: When Kramer is hosting the show and starts getting a little nervous about Jerry's "questionable material" he tells Newman to put on a tape and it starts playing some music while he talks to Jerry. The music that he puts on is the same music they used in the episode "The Pilot (2)" for the "Jerry" pilot.
Trivia: In the Seinfeld Finale, Jerry and George have a conversation in the jail cell about the positioning of a button on George's shirt. For those viewers who don't know or don't remember, that is why George asks, 'Haven't we had this conversation before?', because this is the same conversation that started off the series in the very first episode.