Dick Van Dyke Rob Petrie Actor Mary Tyler Moore Laura Petrie Actor Rose Marie Sally Rogers Actor Morey Amsterdam Maurice "Buddy" Sorrell Actor Ann Morgan Guilbert Millie Helper Actor Richard Deacon Mel Cooley Actor Jerry Paris Jerry Helper Actor Amzie Strickland Maternity Ward Nurse Guest Star Greg Morris Mr. Peters Guest Star Mimi Dillard Mrs. Peters Guest Star John Rich Director Bill Persky Writer Sam Denoff Writer