Filmography
The Very Best of the Muppet Show: Volume 32001 · Writer
The Very Best of the Muppet Show1999 · Writer
The Very Best of the Muppet Show: Volume 21999 · Writer
Martians Go Home1989 · Director
The Yattering And Jack1987 · Director
Masters of the Universe1987 · Writer
Gonzo Presents Muppet Weird Stuff1985 · Writer
Supergirl1984 · Screenplay
Nate and Hayes1983 · Writer
The Dark Crystal1982 · Screenplay
Running Scared1980 · Screenplay
Fore Play1975 · Writer
Between Time and Timbuktu1972 · Writer
Dealing: Or the Berkeley-to-Boston Forty-Brick Lost-Bag Blues1972 · Writer
Cry Uncle!1971 · Screenplay
Fiend of Dope Island1960 · Producer