Kate Beckinsale Donna Newman
Jennifer Coolidge Janine
Christopher Walken Morty
Billy Slaughter Newman Employee (uncredited)
Terry Crews Singing Driver (uncredited)
David Hasselhoff Ammer
Rachel Dratch Alice / Alan
Cameron Monaghan Kevin O'Doyle
Katie Cassidy Samantha at 27 years old
Henry Winkler Ted
Jonah Hill Ben at 17 years old
Adam Sandler Michael Newman, Producer
Rob Schneider Prince Habeeboo (uncredited)
Josh King First Assistant Director
Dean Semler Director of Photography
Thomas Causey Production Sound Mixer
Marcei A. Brubaker Brown Second Assistant Director
Mark Allen Sound Effects Editor
Ellen Lutter Costume Design
Sean Astin Bill
Jenae Altschwager Judy
Nancy Karlin Script Supervisor
Alan Au Art Direction
James Earl Jones Narrator of Michael's Past (voice) (uncredited)
Joseph F. Brennan Boom Operator
James J. Gilson Chief Lighting Technician
Elmo Weber Supervising Sound Editor
Daryl Kass Unit Production Manager
Tracy Bennett Still Photographer
Vanessa Motta Stunts
Michael Dilbeck Music Supervisor
Tammy Sandler Unit Publicist
Tony Rivetti Sr. First Assistant "A" Camera
Julie Kavner Trudy
Jorge Garcia Ammer in SAP scene (uncredited)
Richard Merryman "B" Camera Operator
Bill 'Kauhane' Hoyt Standby Painter
Brian Ruberg Foley Mixer
Jessica Peel Assistant Costume Designer
Valerie Zielonka Costume Supervisor
Ralph Coleman Location Manager
Rick Baker Special Effects Makeup Artist
Georgina Marquis Assistant Production Coordinator
John W. Murphy Dolly Grip
William 'Bear' Paul Key Grip
Lori Harris Costumer
Roger Wall Second Assistant "B" Camera
Nick Swardson Bed, Bath & Beyond Guy
Kim Heath Key Rigging Grip
Toshi Toda Watsuhita Executive
Marisa Ferrey Second Second Assistant Director
David Katz Video Assist Operator
Blake Clark Roy (uncredited)
Tamara McDonough Additional Editing
Michael H. Barnett Stunts
Gary A. Hecker Foley Artist
Jana Kramer Julie
Blake Neely Conductor
Jim Rygiel Visual Effects Designer
Pamela Lynn Thomas Casting Associate
Howard Fong Ping Woo's Grandfather (uncredited)
Steve Koren Producer, Writer
Neal H. Moritz Producer
Tim Herlihy Doctor, Executive Producer
Jake Hoffman Ben at 22-30 years old
Max Daniels Stunts
Frank Coraci Male Nurse, Director
Lily Mo Sheen Lakeside Camp Girl
J.J. Perry Stunts
Spencer Kayden Bar Patron (uncredited)
Carolyn Hennesy Kathy O'Doyle
Michael Yama Watsuhita Head Executive