Bob Newhart Dick Loudon Actor Mary Frann Joanna Loudon Actor Tom Poston George Utley Actor Julia Duffy Stephanie Vanderkellen Actor Peter Scolari Michael Harris Actor William Sanderson Larry Actor Tony Papenfuss First Darryl Actor John Voldstad Second Darryl Actor Sandy Helberg Guest Star Richard Seff Guest Star Jean Hayworth Guest Star Joshua Grenrock Guest Star Peter Baldwin Director Arnie Kogen Writer Gary Jacobs Writer