Favorite Minor Character

How can you call Jerry Stiller a minor character? Every time he appears as George's father, he steals the show! Jerry's parents could almost be called minor before George's parents would be. Of all the characters on the show, I could see the two sets of parents in a spin-off about old folks living in condos in Florida. Jack Klompus(sp?),the old lady with the marble rye, the lady who played Mille on the Dick Van Dyke Show who shows up every once-in-a-while, and other zanies. With this premise, George and Jerry could still appear to visit them.