48 credits
- Muppet Treasure Scriptland
2026 Original Film Writer
- The Muppet Script
2025 Original Film Writer
- The Scripted Muppet Caper
2025 Original Film Writer
- The Muppet Scriptmas Carol
2025 Original Film Writer
- Sesame Street: 50 Years and Counting
2019 Writer
- Jim Henson's Turkey Hollow
2015 Story
- Jim Henson: Commercials and Experiments
2004 Producer
- Muppet History 101
2004 Producer
- The Very Best of the Muppet Show: Volume 3
2001 Writer
- The Very Best of the Muppet Show
1999 Writer
- The Very Best of the Muppet Show: Volume 2
1999 Writer
- Muppets from Space
1999 Writer
- Muppet Treasure Island
1996 Screenplay
- The Muppet Christmas Carol
1992 Screenplay
- The Muppets Celebrate Jim Henson
1990 Writer
- The Earth Day Special
1990 Writer
- Living with Dinosaurs
1990 Co-Producer
- The Muppets at Walt Disney World
1990 Writer
- The Song of the Cloud Forest
1989 Co-Producer
- Lighthouse Island
1989 Writer
- A Muppet Family Christmas
1987 Writer
- The Muppets: A Celebration of 30 Years
1986 Writer
- Gonzo Presents Muppet Weird Stuff
1985 Writer
- Muppet Treasures
1985 Writer
- The Bells of Fraggle Rock
1984 Writer
- Fraggle Rock: Live by the Rule of the Rock
1983 Writer
- The Muppets Go to the Movies
1981 Writer
- The Great Muppet Caper
1981 Writer
- The Muppet Movie
1979 Writer
- The Muppets Go Hollywood
1979 Writer
- Emmet Otter's Jug-Band Christmas
1977 Writer
- The Muppet Musicians of Bremen
1972 Writer
- Tales from Muppetland: The Frog Prince
1971 Writer
- The Muppets on Puppets
1970 Writer
- The Great Santa Claus Switch
1970 Writer
- The Wizard of Id
1969 The King of Id (voice)
- The Cube
1969 Writer
- Youth '68
1968 Writer
- Rowlf the Salesman
1966 Writer
- Time Piece
1965 Bartender
- Alexander the Grape
1965 Alexander the Grape (voice)
- The Reindeer
1965 Blitzen (voice)
- Tales of the Tinkerdee
1962 Writer
