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 Andy Berman Chuck Coleman Guest Star Richard Chaim Nebbish Guest Star Richard Fancy Dr. Valenti Guest Star Eric Foster Neal Pemish Guest Star Troy Fromin Slovosky Guest Star Seth Green Jimmy Donnelly Guest Star Laurel Moglen Sheila McCaffry Guest Star Scott Nemes Ricky Halsenbach Guest Star Jean Sincere Nurse Guest Star Demian Slade Joey Spinoza Guest Star Lindsay Sloane Alice Pedermeir Guest Star Richard Stay Maniac Guest Star Sy Dukane Writer Denise Moss Writer Ken Topolsky Director