Patrick Dempsey
Robert 'Bobby' Libner
Arye Gross
Buddy Libner
Daniel Stern
Marvin Libner
Annabeth Gish
Tammy
Rita Taggart
Betty Libner
Joseph Bologna
Uncle Phil
Alan Arkin
Fred Libner
James Gammon
Dr. Sturgeon The Cadillac Surgeon
Ray Lykins
Rick
Chris Lombardi
Raymond
Josh Segal
Billy Sturgeon
John Considine
Professor Kloppner, Eastbrook Academy
Steve Boles
Policeman #1
Don Tilley
Policeman #2
Terry Loughlin
Gas Station Attendant
Reid 'Pete' Shook
Gas Station Attendant #2
Fred Ornstein
Barney
Don Sheldon
Fishing Buddy
Boots Crowder
Waitress
Edan Gross
Young Bobby
Michael Weiner
Young Buddy
Dean Jacobson
Young Marvin
Steve Alterman
Additional Voices (voice)
Terrence Beasor
Additional Voices (voice)
Joe Chapman
Additional Voices (voice)
Brian K. Doughty
Additional Voices (voice)
Judi Durand
Additional Voices (voice)
Barbara Hey
Additional Voices (voice)
Carol King
Additional Voices (voice)
David McCharen
Additional Voices (voice)
Larry Moss
Additional Voices (voice)
Erin Ferdinand
Dog Track Gambler (uncredited)
Randy Herman
Dog Track Gambler (uncredited)
Robert Westerfield
Dog Track Gambler (uncredited)