John Ritter Jack Tripper Actor Joyce DeWitt Janet Wood Actor Priscilla Barnes Terri Alden Actor Richard Kline Larry Dallas Actor Jenilee Harrison Cindy Snow Actor Don Knotts Ralph Furley Actor Robert Swick Guest Star Michael Ross Executive Producer Bernie West Executive Producer George Burditt Executive Producer Martin Rips Producer Joseph Staretski Producer George Sunga Producer Dave Powers Director Budd Grossman Writer