Melinda Clarke (Julie Cooper-Nichol on The O.C.) played Jerry’s girlfriend in the episode “The Muffin Tops,” featuring Kramer’s “Peterman Reality Tour” and Jerry’s experiment with shaving his chest hair. But that was in '97, so I don’t think that her current career can be attributed to her stint on Seinfeld.
(She also played a whorehouse madam on an episode of Firefly that was never aired.)
Going down the list of guest stars for the final episode is sure to be interesting, as it was largely a ‘who’s who’ of the most well-remembered guest stars from the run of the show.
You ever listen to Dr. Demento as a kid? Stiller and Meara routines were a staple on that show. One of the most successful comedy teams of the '60s they were.
David Naughton, the lead in An American Werewolf In London was in “The Red Dot.”
And Mark Metcalf (Animal House - Neidermeyer, Buffy the Vampire Slayer - first season, The Master) had a recurring role and Kramer’s friend The Maestro.
His first regular sit-com role was on the Paul Lynde show back in 1973,
Not to mention currently on Less Than Perfect. He and Will Sasso were both added to the show 2 seasons ago. One of the few sitcom changes that actually improved the show.
That was indeed Larry David. that’s also him saying, “Excuse me your highness, we don’t accept bills with lipstick on the President” when George tries to buy something dressed as King Henry V (or something) for Kramer’s movie theater premiere.