John Ritter Jack Tripper Actor Joyce DeWitt Janet Wood Actor Suzanne Somers Chrissy Snow Actor Audra Lindley Helen Roper Actor Norman Fell Stanley Roper Actor Richard Kline Larry Dallas Actor Sondra Currie Guest Star Don Porter Guest Star Jess Nadelman Guest Star Sandra de Bruin Guest Star Natalie Schafer Guest Star James Cromwell Guest Star J.J. Barry Guest Star David Tress Guest Star Bruce Bauer Guest Star Alan Koss Guest Star Paul Ainsley Guest Star Sally Kirkland Guest Star Susan Blu Guest Star Brian Kend Guest Star Don Nicholl Producer, Writer Michael Ross Producer, Writer, Director Bernie West Producer, Writer Bill Hobin Director Sam Gary Director Paul Wayne Writer Alan J. Levitt Writer Kathy Donnell Writer Joyce Burditt Writer Rich Orloff Writer Charles Stewart Writer George Burditt Writer Gary Belkin Writer Phil Hahn Writer Madelyn Dimaggio Wagner Writer Stuart Gillard Writer