- The Muppet Script
2025 Original Concept
- The First Snow of Fraggle Rock
2025 Characters
- Muppets Haunted Mansion
2021 Characters
- Sesame Street: 50 Years and Counting
2019 Ernie / Kermit the Frog / Various Characters
- Fozzie's Bear-ly Funny Fridays
2015 Creator
- Jim Henson's Turkey Hollow
2015 Story
- Muppets Most Wanted
2014 Characters
- Lady Gaga & the Muppets Holiday Spectacular
2013 Characters
- The Muppets
2011 Characters
- Jim Henson's Tales from Muppetland
2009 Director
- A Muppets Christmas: Letters to Santa
2008 Characters
- A Sesame Street Christmas Carol
2006 Ernie (voice) (archive footage)
- The Muppets' Wizard of Oz
2005 Characters
- Jim Henson: Commercials and Experiments
2004 Director
- Muppet History 101
2004 Director
- AFI's 100 Years... 100 Songs: America's Greatest Music in the Movies
2004 Kermit the Frog
- Sesame Street: Cookie Monster's Best Bites
2004 Guy Smiley (voice, archive footage)
- Sesame Street: Elmo's World: The Street We Live On!
2004 Ernie / Kermit the Frog / Mah Na Mah Na / Fat Blue / The Baker / King of 8 (voice) (archive footage) (uncredited)
- Muppets Magic from 'The Ed Sullivan Show!'
2003 Muppet Performer
- Sesame Street: Bert & Ernie's Word Play
2002 Kermit the Frog / Bip Bippadotta / Lavender Anything Muppet in Fat Cat (voice) (archive footage)
- It's a Very Merry Muppet Christmas Movie
2002 Characters
- Kermit's Swamp Years
2002 Characters
- The Very Best of the Muppet Show: Volume 3
2001 Writer
- Sesame Street: Elmo's World: Singing, Drawing & More!
2000 Ernie (archive)
- The Very Best of the Muppet Show
1999 Writer
- The Very Best of the Muppet Show: Volume 2
1999 Writer
- Muppets from Space
1999 Characters
- The Adventures of Elmo in Grouchland
1999 Characters
- The Best of Kermit on Sesame Street
1998 Kermit the Frog (voice) (archive footage)
- Sesame Street: Elmo Says BOO!
1997 Ernie / Harvey Monster (voice) (archive footage)
- Sesame Street: Quiet Time
1997 Ernie ("Naptime") / Kermit the Frog (voice) (archive footage)
- Sesame Street: Do the Alphabet
1996 Ernie (voice)
- Sesame Street: Imagine That!
1996 Ernie (voice) (archive footage)
- Muppet Sing Alongs: Treasure Island
1996 Characters
- Muppet Treasure Island
1996 Characters
- Mr. Willowby's Christmas Tree
1995 Characters
- Sesame Street | All-Star 25th Birthday: Stars and Street Forever!
1994 Kermit the Frog / Ernie (archive footage)
- Sesame Street's 25th Birthday: A Musical Celebration
1993 Ernie / Kermit the Frog / Guy Smiley (archive footage) (voice)
- A Classic Christmas from The Ed Sullivan Show
1992 Kermit the Frog (voice)
- Getting Ready to Read
1992 Kermit / Ernie / Bip Bippadotta (voice)
- The Muppet Christmas Carol
1992 In Memory Of
- Teenage Mutant Ninja Turtles II: The Secret of the Ooze
1991 In Memory Of
- The Storyteller: Greek Myths - Theseus & the Minotaur
1991 Executive Producer
- The Storyteller: Greek Myths - Perseus & the Gorgon
1991 Executive Producer
- The Storyteller: Greek Myths - Orpheus & Eurydice
1991 Executive Producer
- The Storyteller: Greek Myths - Daedalus & Icarus
1991 Executive Producer
- Sesame Street: Sing Yourself Silly!
1990 Ernie / Singer / Kermit the Frog (archive footage) (segment "One Banana") (voice)
- The Muppets at Walt Disney World
1990 Executive Producer
- Sesame Street: Monster Hits!
1990 Harvey Monster (voice)
- The Earth Day Special
1990 Kermit the Frog (voice)
- The Witches
1990 Executive Producer
- Basil Hears a Noise
1990 In Memory Of
- Living with Dinosaurs
1990 Executive Producer
- Disneyland's 35th Anniversary Celebration
1990 Characters
- Dog City
1989 Director
- 50 Years of Television: A Golden Celebration
1989 Kermit the Frog
- Miss Piggy's Hollywood
1989 Waldorf
- Sesame Street: 20 Years & Still Counting! 1969-1989
1989 Executive Producer
- The Song of the Cloud Forest
1989 Director
- Free to Be... a Family
1988 Kermit the Frog (voice)
- Jim Henson: Sing-Along, Dance-Along, Do-Along
1988 Executive Producer
- Hey, You're as Funny as Fozzie Bear
1988 Executive Producer
- Sesame Street: Put Down the Duckie
1988 Kermit the Frog / Ernie (voice)
- Muppet Studios Presents: You're the Director
1988 Executive Producer
- Wow, You're A Cartoonist!
1988 Kermit The Frog
- The Best of Ernie and Bert
1988 Director
- The Storyteller: Fearnot
1988 Executive Producer
- The Storyteller: Hans My Hedgehog
1988 Executive Producer
- The Storyteller: A Story Short
1988 Executive Producer
- The Storyteller: The Luck Child
1988 Executive Producer
- The Storyteller: Sapsorrow
1988 Executive Producer
- The Storyteller: The True Bride
1988 Executive Producer
- The Storyteller: The Three Ravens
1988 Executive Producer
- A Muppet Family Christmas
1987 Executive Producer
- Down at Fraggle Rock
1987 Cantus the Minstrel / Convincing John / Self / Host
- Muppet Coffee Break
1987 Leo (voice)
- Muppet Breakaway
1987 Leo (voice)
- The Christmas Toy
1986 Producer
- Sesame Street: Learning About Letters
1986 Ernie/Kermit the Frog/King Peter the Persnickety (voice)
- Inside the Labyrinth
1986 Writer
- The Muppets: A Celebration of 30 Years
1986 Creator
- The Tale of the Bunny Picnic
1986 Director
- Sesame Street: Sleepytime Songs & Stories
1986 Ernie / The King (Bedtime Stories & Songs) (voice)
- Labyrinth
1986 Director
- Sesame Street: Learning About Numbers
1986 Ernie / Kermit the Frog / King of 8 (voice) (uncredited)
- Into the Night
1985 Man on Phone
- Follow That Bird
1985 Characters
- Gonzo Presents Muppet Weird Stuff
1985 Writer
- Muppet Video: Rowlf's Rhapsodies with the Muppets
1985 Rowlf (voice)
- Muppet Treasures
1985 Writer
- The Muppet Revue
1985 Kermit the Frog (voice)
- Night of 100 Stars II
1985 Kermit the Frog
- Muppet Video: The Kermit and Piggy Story
1985 Writer
- Fraggle Rock: Scared Silly
1985 Writer
- The Muppets Take Manhattan
1984 Executive Producer
- The Bells of Fraggle Rock
1984 Creator
- The World of 'The Dark Crystal'
1983 Director
- Don't Eat the Pictures: Sesame Street at the Metropolitan Museum of Art
1983 Ernie (voice)
- Big Bird in China
1983 Ernie (voice)
- Muppet Breakthrough
1983 Leo
- Fraggle Rock: Live by the Rule of the Rock
1983 Director
- I Love Liberty
1982 Kermit the Frog (voice)
- The Fantastic Miss Piggy Show
1982 Director
- The Dark Crystal
1982 Director
- The Great Muppet Caper
1981 Director
- The Muppets Go to the Movies
1981 Writer
- Muppet Side Splitter
1981 Leo (voice)
- The Muppet Movie
1979 Producer
- The Muppets Go Hollywood
1979 Characters
- John Denver and the Muppets: A Christmas Together
1979 Characters
- Muppet Breaker Upper
1979 Leo
- Muppet Gimme a Break
1979 Leo / Pasta in "Meal Break"
- Grump Critic
1979 Leo
- Let's Have the Dam Break
1979 Leo
- Meal Break
1979 Leo / Spaghetti
- A Walking Tour of Sesame Street
1979 Ernie / Kermit the Frog (archive footage) (uncredited)
- Hip Hip Parade!
1978 Kermit the Frog
- Christmas Eve on Sesame Street
1978 Executive Producer
- Mickey's 50
1978 Kermit the Frog (voice)
- Julie Andrews: One Step Into Spring
1978 Kermit The Frog / Rowlf the Dog / Dr. Teeth
- The Vent Event
1978 Kermit the Frog
- Emmet Otter's Jug-Band Christmas
1977 Director
- The Bob Hope All Star Christmas Comedy Special
1977 Kermit the Frog / Rowlf
- The Muppet Show Pitch Reel
1976 Leo / Kermit the Frog (voice)
- Kagayake! Gorō Mapetto Geba Geba 90-pun!
1976 Kermit the Frog
- Julie: My Favourite Things
1975 Kermit the Frog / Dr. Teeth
- Muppet Picker Upper
1975 Director
- Just a Few Announcements
1975 Kermit the Frog
- The Muppet Introduction
1975 Kermit the Frog
- Out to Lunch
1974 Kermit / Ernie / Guy Smiley / Person with Cue Card (voice)
- Keep U.S. Beautiful
1973 Muppets
- Julie on Sesame Street
1973 Producer
- The Muppet Musicians of Bremen
1972 Director
- The King of Eight
1971 Director
- Tales from Muppetland: The Frog Prince
1971 Director
- Pure Goldie
1971 Kermit the Frog (voice)
- The Queen of Six
1971 Director
- Number Twelve Rocks
1971 Director
- The Muppets on Puppets
1970 Characters
- The Great Santa Claus Switch
1970 Executive Producer
- Doll House
1970 Director
- Hey Cinderella!
1969 Director
- The Wizard of Id
1969 Director
- Sesame Street Pitch Reel
1969 Kermit the Frog / Rowlf / Grump / Conrad Love / The Spook
- This Way to Sesame Street
1969 Ernie/Kermit
- Sam the Snake
1969 Director
- The Cube
1969 Director
- Youth '68
1968 Writer
- The Paperwork Explosion
1967 Director
- Ripples
1967 Director
- Wheels That Go
1967 Director
- Bufferin: Memories
1967 Director
- Limbo: The Organized Mind
1966 Director
- Rowlf the Salesman
1966 Director
- The Idea Man
1966 Director
- Time Piece
1965 Director
- Alexander the Grape
1965 Director
- The Reindeer
1965 Director
- Run, Run
1965 Director
- Robot
1963 Director
- Tales of the Tinkerdee
1962 Writer
- Shearing Animation
1962 Director
- Drums West
1961 Director
- Cat and Mouse
1960 Director
- Sesame Street 1986 Wrap Party
Ernie / Himself
- Untitled Labyrinth Sequel
Original Film Writer
- Untitled Miss Piggy Film
Characters
