Fred Savage Kevin Arnold Actor Jason Hervey Wayne Arnold Actor Olivia d'Abo Karen Arnold Actor Dan Lauria Jack Arnold Actor Alley Mills Norma Arnold Actor Danica McKellar Gwendolyn "Winnie" Cooper Actor Josh Saviano Paul Pfeiffer Actor Ben Slack Mr. Ermin Guest Star Candice Azzara Mrs. Ermin Guest Star David Selburg Lou Guest Star Carol Mansell Jeanne Guest Star Kimberley Kates Carol Guest Star Parker Whitman Bill Guest Star Scott Nemes Ricky Halsenbach Guest Star Michael Tricario Randy Mitchell Guest Star Marty Zagon Mr. Wannamaker Guest Star Patrick Thomas O'Brien Mr. Santa Guest Star Lorna Scott Mrs. Santa Guest Star Roger Nolan Mr. Weisman Guest Star Sy Dukane Writer Denise Moss Writer Jim McBride Director