 | Reflections of 'The Dark Crystal' (2007) als Himself |
 | Of Muppets & Men (1981) als Self |
 | Cry Uncle! (1971) als Angry Man in Parking Lot (uncredited) |
 | The Very Best of the Muppet Show: Volume 3 Writer |
 | The Very Best of the Muppet Show Writer |
 | The Very Best of the Muppet Show: Volume 2 Writer |
 | Martians Go Home Director |
 | The Yattering And Jack Director |
 | Masters of the Universe Screenplay |
 | Gonzo Presents Muppet Weird Stuff Writer |
 | Supergirl Screenplay |
 | Nate and Hayes Writer |
 | The Dark Crystal Screenplay |
 | Running Scared Screenplay |
 | Fore Play Writer |
 | Between Time and Timbuktu Writer |
 | Dealing: Or the Berkeley-to-Boston Forty-Brick Lost-Bag Blues Writer |
| | Cry Uncle! Screenplay |
 | Fiend of Dope Island Producer |