Oyuncu
| 2007 | Reflections of 'The Dark Crystal' as Himself |
| 1981 | Of Muppets & Men as Self |
| 1971 | Cry Uncle! as Angry Man in Parking Lot (uncredited) |
Diğer Roller
| 2001 | The Very Best of the Muppet Show: Volume 3 - Writer |
| 1999 | The Very Best of the Muppet Show - Writer |
| 1999 | The Very Best of the Muppet Show: Volume 2 - Writer |
| 1990 | Martians Go Home - Director |
| 1987 | The Yattering And Jack - Director |
| 1987 | He-Man Dünyalar Hâkimi - Screenplay |
| 1985 | Gonzo Presents Muppet Weird Stuff - Writer |
| 1984 | Süper Kız - Screenplay |
| 1983 | Nate and Hayes - Writer |
| 1982 | Siyah Kristal - Screenplay |
| 1980 | Running Scared - Screenplay |
| 1975 | Fore Play - Writer |
| 1972 | Between Time and Timbuktu - Writer |
| 1972 | Dealing: Or the Berkeley-to-Boston Forty-Brick Lost-Bag Blues - Writer |
| 1971 | Cry Uncle! - Screenplay |
| 1961 | Fiend of Dope Island - Producer |
Duvar