Michael Ornstein is Waiter in The Shoes (Season 4 Episode 16).
Michael Richards is a Cosmo Kramer in 170 episodes. In fact, he appears in all but two episodes: The Chinese Restaurant (Season 2 Episode 16) and The Pen (Season 3 Episode 3).
Michelle Forbes is Julie, George's girlfriend in The Big Salad (Season 6 Episode 2).
Mike Hagerty is Rudy, a cabana wear vendor in The Raincoats (Season 5 Episodes 18-19).
Nancy Balbirer is Woman at Party in The Mom and Pop Store (Season 6 Episode 8).
Nancy Lenehan is volunteer for the United Volunteer in The Handicap Spot (Season 4 Episode 22).
Nancy Linehan Charles is Woman Executive in The Comeback (Season 8 Episode 13).
