Jerry Seinfeld Jerry Seinfeld Actor Jason Alexander George Costanza Actor Michael Richards Cosmo Kramer Actor Julia Louis-Dreyfus Elaine Benes Actor Stephen Tobolowsky Tor Guest Star Heather James Waitress Guest Star John Posey Dr. Fein Guest Star Pat Hazell Man in Other Bed Guest Star John Fleck Attendant Guest Star Jimmy Woodard Driver Guest Star Thomas Wagner The Cook Guest Star Tom Cherones Director Larry Charles Writer