Jim Henson
Self / Various Muppets (archive footage)

Frank Oz
Self / Miss Piggy / Fozzie Bear / Animal / Bert / Sam the Eagle (voice)

Jerry Nelson
Robin the Frog / Lew Zealand / Floyd Pepper / Announcer (voice)

Richard Hunt
Scooter / Beaker / Janice (voice)

Dave Goelz
The Great Gonzo / Beauregard / Boober Fraggle / Zoot (voice)

Steve Whitmire
Kermit the Frog / Rizzo the Rat / Bean Bunny / Whoopie Cushion (voice)

Kevin Clash
Clifford / Elmo (voice)

Kathryn Mullen
Joy Buzzer / Mokey Fraggle (voice)

Caroll Spinney
Big Bird (voice)

Pam Arciero
Grundgetta (voice)

Harry Belafonte
Self

Carol Burnett
Self

John Denver
Self

Steven Spielberg
Self

Ray Charles
Self

John Cleese
Self

Charles Durning
Self

Dabney Coleman
Self

Ted Koppel
Self

Fran Brill
Additional Muppet Performer

Camille Bonora
Additional Muppet Performer

Joey Mazzarino
Additional Muppet Performer

Jim Martin
Additional Muppet Performer

Peter MacKennan
Additional Muppet Performer

Carmen Osbahr
Additional Muppet Performer

Martin P. Robinson
Additional Muppet Performer

David Rudman
Additional Muppet Performer

Craig Shemin
Additional Muppet Performer

Cheryl Henson
Additional Muppet Performer

Bill Prady
Additional Muppet Performer