James Earl Jones
Himself
Caroll Spinney
Big Bird / Oscar the Grouch
Linda Bove
Linda
Emilio Delgado
Luis
Loretta Long
Susan
Bob McGrath
Bob
Roscoe Orman
Gordon
Alaina Reed Hall
Olivia
Will Lee
Mr. Hooper
Brian Muehl
Barkley
Jerry Nelson
Mr. Johnson / The Count / Mr. Snuffleupagus (archive footage)
Frank Oz
Grover / Cookie Monster / Bert (archive footage)
Burt Lancaster
Himself (archive footage)
Henry Winkler
Arthur "The Fonz" Fonzarelli (archive footage)
Ron Howard
Richie Cunningham (archive footage)
Arte Johnson
Wolfgang (archive footage)
Flip Wilson
Himself (archive footage)
Richard Pryor
Himself (archive footage)
Joey Calvan
Joey (archive footage)
Bill Cosby
Himself, as twins (archive footage)
Lorne Greene
Ben Cartwright (archive footage)
Michael Landon
Little Joe (archive footage)
Dan Blocker
Hoss (archive footage)
Pat Paulsen
Himself (archive footage)
Jim Henson
Kermit the Frog / Ernie (archive footage)
Jim Thurman
Pilot (archive footage)
Lucien Morisse
Toccata (archive footage)
Georges Mosca
Mordicus (archive footage)
Pepe Martinez Blanco
Epi (voice) (archive footage)
Javier Dotú
Blas (voice) (archive footage)
Sonia Manzano
Maria (archive footage)
Ray Barretto
Himself (archive footage)
Michael Earl
Mr. Snuffleupagus (archive footage)
Northern Calloway
David (archive footage)
Buffy Sainte-Marie
Buffy (archive footage)