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 Emmaline Henry Guest Star Barrie Youngfellow Guest Star Paul Barselou Guest Star Rod McCary Guest Star Anne Schedeen Guest Star Ruta Lee Guest Star Lois Areno Guest Star Paul Kent Guest Star Bibi Osterwald Guest Star Nadia Caillou Guest Star Steve Shaw Guest Star Rebecca Clemons Guest Star Paul Ainsley Guest Star John Larroquette Guest Star Don Nicholl Executive Producer, Writer Michael Ross Executive Producer, Writer Bernie West Executive Producer, Writer Roger Shulman Producer, Writer John Baskin Producer, Writer Dave Powers Director Al Gordon Writer Gary Belkin Writer Jim Rogers Writer Bob Baublitz Writer Martin Roth Writer Franelle Silver Writer Jack Mendelsohn Writer Paul Wayne Writer George Burditt Writer