In tonite's Caroline in the City (2/15), I noticed that the director of the episode was Tom Cherones. Well, this name should ring a bell with you die-hard Seinfeld fans. He directed many of the early Seinfeld episodes, at least the first few seasons.
Also, the Caroline gets mugged by the guy who played the friend of Jerry's who doesn't remember Elaine (I think the character's name was Kenny on Seinfeld). Anyway, Elaine goes out with this guy only because he never remembers her.
-V