Over an 18-year period Stark produced eleven scripts by acclaimed playwright Neil Simon, including "The Sunshine Boys" (1975), for which George Burns won the Oscar for Best Supporting Actor; "Murder by Death" (1976), featuring an eclectic cast of Eileen Brennan, Truman Capote, James Coco, Peter Falk, Alec Guinness, Elsa Lanchester, David Niven, Peter Sellers, and Maggie Smith; "The Goodbye Girl" (1977) with Richard Dreyfuss and Marsha Mason, for which Dreyfus won the Academy Award for Best Actor; and "California Suite" (1978), which won Maggie Smith the Academy Award for Best Supporting Actress.