4. Hello, Newman!
Of course, if there was any character who could be considered for a spin-off, it's Jerry and Kramer's neighbor, Newman. Actor Wayne Knight made 43 appearances on Seinfeld, more than any other reoccuring minor character. If Kevin James can play a deliveryman in The King of Queens for nine seasons, Wayne Knight could have played a mailman for at least as many. In one episode of Seinfeld, Jerry and Newman, in a rare alliance, attempt to help Newman get a transfer to Hawaii, "the most sought-after route for all postmen." They failed to win Newman his transfer, but who says Newman could not have eventually succeeded? Newman in Hawaii, with his dream mail route in a government job with the reputation for making people go nuts? Oh, what could have been.