Dan23

Answer: In s01e08 of "Mad About You", Jamie finds out Paul still has an apartment in his name that he's subletting. Jamie wants Paul to get his name off the lease and when he goes there, we find out the person subletting The Apartment is Kramer. Paul even asks Kramer if his neighbor, Jerry, is still doing comedy. It even seems to be The Apartment hallway from the Seinfeld set. However, in s07e01 of "Seinfeld" George Costanza says he hates the show "Mad About You" as he and Susan are watching it, which many consider means a Seinfeld/Mad About You crossover never actually happened (since it would have to mean a show called "Mad About You" exists in the "Mad About You" universe). But there wasn't a Seinfeld episode where a "Mad About You" character appears as a crossover. Later, in s07e01 of "Mad About You", Jerry Seinfeld has a cameo where he bumps into Paul and a Paul tells him his wife is a huge fan and wants an autograph, and he's referenced as a celebrity. This episode aired about 4 months after the "Seinfeld" finale, where Jerry and friends get sentenced to a year in prison, so it's unlikely it's another crossover episode and Jerry is just playing himself.

Answer: It was sort of an urban legend that started when people noticed Jerry has a Superman figurine on his bookshelf. Barry Freiman, a writer who has written about Superman and pop culture, says he watched every Seinfeld episode looking for a reference in each one and said even though there's a lot, it not in every episode. When Jerry Seinfeld was asked about it, he said you can't count seeing the Superman model as a reference to Superman and there's maybe 10 episodes that actually reference Superman.

Bishop73