Santa (voice)
King Karoth (voice)
Self (archive footage)
Al Hart
Self
Preston Bullock
ThinkMan (voice)
Clark Griswold
Repairman
Adult Felix
Grandpa Geoffrey
Self - Actor (archive footage)
Lester Horn
Gravedigger
Self (archive footage)
Self - Interviewee
Max Storm
Principal Marshall
Narrator (voice)
Various (archive footage)
Repairman
Gerald Ford
Clark Griswold
Antipode
Clark Griswold (voice)
Stan
General Nuisance
Dr. Grant
Train (voice)
Congreve Maddox
Henry
Himself / Various (archive footage) (uncredited)
Dennis Swartzbaum
Self (archive footage)
Cho-Cho
Paul Parmesan
Congressman Bernard P. Greely
Mr. Punch
Narrator (voice)
Principal Harbert
Dennis
Tom Brandston
Narrator
Self (archive footage)
Himself
Dr. Farthing
Clark Griswold
Jack Sturgess (Squatting Dog)
Norman Robberson
Himself
Chevy Chase
Deke - Channel 4 News Director
Nick Holloway
Chris Thorne
Carlo Christopher
Vic's Buddy
Self - Choir Member
Clark Griswold
Irwin 'Fletch' Fletcher
Ty Webb
Andy Farmer
Condom Father
Dusty Bottoms
Emmett Fitz-Hume
Various characters
Newscaster
Clark Griswold
Self
Irwin 'Fletch' Fletcher
Eddie Muntz
Clark Griswold
Max Fielder
Bruce Thorpe
Nick Gardenia
Ty Webb
Browning
Tony Carlson
Chevy Chase
The Fingers / Geritan / Four Leaf Clover
Various
