Sean Astin Bill
Kate Beckinsale Donna Newman
Adam Sandler Michael Newman, Producer
Jonah Hill Ben at 17 years old
Jennifer Coolidge Janine
Terry Crews Singing Driver (uncredited)
Rob Schneider Prince Habeeboo (uncredited)
Cameron Monaghan Kevin O'Doyle
Christopher Walken Morty
David Hasselhoff Ammer
Henry Winkler Ted
Ian Fox "A" Camera Operator
Marco Khan Habeeboo Entourage
Katie Cassidy Samantha at 27 years old
Jake Hoffman Ben at 22-30 years old
Jorge Garcia Ammer in SAP scene (uncredited)
Frank Coraci Director, Male Nurse
James Earl Jones Narrator of Michael's Past (voice) (uncredited)
Blake Clark Roy (uncredited)
Perry Andelin Blake Production Design
Nick Swardson Bed, Bath & Beyond Guy
Mark Allen Sound Effects Editor
Ellen Lutter Costume Design
Spencer Kayden Bar Patron (uncredited)
Rachel Dratch Alice / Alan
Jenae Altschwager Judy
Nancy Karlin Script Supervisor
Alan Au Art Direction
Lily Mo Sheen Lakeside Camp Girl
James J. Gilson Chief Lighting Technician
Daryl Kass Unit Production Manager
Tracy Bennett Still Photographer
Tony Rivetti Sr. First Assistant "A" Camera
Tim Herlihy Executive Producer, Doctor
Michael Dilbeck Music Supervisor
Elmo Weber Supervising Sound Editor
Julie Kavner Trudy
Corina C. Duran-Rabichuk Makeup Artist
Tammy Sandler Unit Publicist
Richard Merryman "B" Camera Operator
Brian Ruberg Foley Mixer
J.J. George Music Editor
Jessica Peel Assistant Costume Designer
Thomas J. Larsen Stunts
Lorraine Nicholson Samantha at 14 years old
Rupert Gregson-Williams Original Music Composer
Carolyn Hennesy Kathy O'Doyle
Gary A. Hecker Foley Artist
Toshi Toda Watsuhita Executive
Matthew P. Hanson Assistant Sound Editor
Clinton Wayne Prosthetic Makeup Artist
Timothy S. Wiles Property Master
Marisa Ferrey Second Second Assistant Director
Kevin Grady Co-Producer
Vanessa Motta Stunts
Charlie Scott Jr. Craft Service
Dean Semler Director of Photography
Marc Glassman Sound Effects Designer
Neal H. Moritz Producer
Tamara McDonough Additional Editing
Fred L. McLane First Assistant "B" Camera
Thomas Real Hair Department Head
Blake Neely Conductor
Barry Bernardi Executive Producer
Robert Jones Firecracker Teen
J.J. Perry Stunts
Michael H. Barnett Stunts
Ann Pala Makeup Department Head
Max Daniels Stunts
Jack Giarraputo Producer
Jana Kramer Julie
Bill W. Benton Sound Mixer