Smiley (voice)
Uncle Al
Dr. Brenner
Party Guest (voice) (uncredited)
Uncle Joe
Jepson (voice)
Dr. Cotton
Keith (voice)
(archive footage)
Self
Grandpa Bill (voice)
Testimonial
Henry Winkler
Nerd's Dad (voice)
Stanley Warner
Nerd's Dad / Jason Bourne / Christmas Tree (voice)
Nathaniel Zib (voice)
Narrator
Bob Weatherbee
Zib (voice)
Burton
Uncle Ralph
Judge Newman
Limousine Passenger
Happy Herb
Himself / Henry Winkler (uncredited)
Self
Ted Newman
Fullerton
Johnny Bernstein
Fonzie ("Buddy Holly") (archive footage)
Stanley Yelnats III
Henry Winkler
Chef Ray
Edward Crow
Larry Steinberg
Coach Klein
John Quinn
Skip Fine
Jack Potter
Principal Arthur Himbry (uncredited)
Steven Moore
Arthur 'Fonzie' Fonzarelli (archive footage)
Marty Klein
Self - Choir Member
Carl Conway (voice)
Carl Conway (voice)
Self (archival footage)
Himself / Arthur 'The Fonz' Fonzarelli
Chuck Lumley
Benedict Slade
Arthur "The Fonz" Fonzarelli (archive footage)
Andy Schmidt
Self - Host (Television Version)
Jack Dunne
Bob Kline
Butchey Weinstein
Mannie
Auditioning Actor (uncredited)
