Jim Henson as Self, various voices (archive footage)

Harry Belafonte as Self

Carol Burnett as Self

John Denver as Self

Frank Oz as Self / Miss Piggy / Fozzie Bear / Animal / Bert / ... (voice)

Steven Spielberg as Self

Ray Charles as Self

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

Steve Whitmire as Kermit the Frog / Rizzo the Rat / Bean Bunny / ... (voice)

Kevin Clash as Clifford (voice)