John Ritter Jack Tripper Actor Joyce DeWitt Janet Wood Actor Suzanne Somers Chrissy Snow Actor Norman Fell Stanley Roper Actor Audra Lindley Helen Roper Actor Michael Bell Guest Star Regi Baff Guest Star Diane Sommerfield Guest Star Paul Ainsley Guest Star Don Nicholl Executive Producer Michael Ross Executive Producer Bernie West Executive Producer Roger Shulman Producer John Baskin Producer Dave Powers Director Paul Wayne Writer George Burditt Writer