John Ritter and Dorothy Stratten in They All Laughed (1981)

John Ritter and Harry Bellaver in Hero at Large (1980)

John Ritter, Michael Gorrin, Henrietta Jacobson, and Michael Leon in Hero at Large (1980)

Anne Archer and John Ritter in Hero at Large (1980)

John Ritter, Harry Bellaver, Tony Cacciotti, and Bert Convy in Hero at Large (1980)

John Ritter and Alberto Ferrara in Hero at Large (1980)

John Ritter and Kurt Andon in Hero at Large (1980)

John Ritter and Allan Rich in Hero at Large (1980)

John Ritter and Markie Post in Hearts Afire (1992)

John Ritter, Suzanne Somers, and Joyce DeWitt in Three's Company (1976)

John Ritter, Priscilla Barnes, Joyce DeWitt, Jenilee Harrison, Richard Kline, and Don Knotts in Three's Company (1976)

John Ritter, Priscilla Barnes, Jordan Charney, Joyce DeWitt, and Don Knotts in Three's Company (1976)

John Ritter, Ben Gazzara, and Dorothy Stratten in They All Laughed (1981)

John Ritter, Priscilla Barnes, and Joyce DeWitt in Three's Company (1976)

John Ritter, Katey Sagal, Kaley Cuoco, Amy Davidson, and Martin Spanjers in 8 Simple Rules (2002)