He provided the voice of Krebbs the koala in The Rescuers Down Under (1990) and, two years later, the Sultan in Aladdin (1992) (with Val Bettin replacing him in the later productions). He also appeared in several films including Milos Forman's Amadeus (1984) and Ernest Saves Christmas (1988) in which he played Santa Claus. He appeared in the 1986 Christmas film, A Smoky Mountain Christmas, as Vernon. Douglas had a small starring role as Santa in Steven Spielberg's Amazing Stories. In 1989, he appeared in the Family Ties episode "Get Me to the Living Room on Time".