Michael Newman

Adam Sandler

Donna Newman

Kate Beckinsale

Morty

Christopher Walken

Ammer

David Hasselhoff

Bill Rando

Sean Astin

Ted Newman

Henry Winkler

Janine

Jennifer Coolidge

Trudy Newman

Julie Kavner

Alice

Rachel Dratch

Ben at 7 years old

Joseph Castanon

Ben at 17 years old

Jonah Hill

Ben at 22-30 years old

Jake Hoffman

Stacy

Sophie Monk

Kevin O'Doyle

Cameron Monaghan

Samantha at 5 years old

Tatum McCann

Ignatius

Nate Torrence

Samantha at 14 years old

Lorraine Nicholson

Kirsten

Katheryn Cain

Samantha at 27 years old

Katie Cassidy

Susie

Theresa Barrera

Janine

Jennifer Coolidge*

Judy

Jenae Altschwager

Sparkling Water Guy

Erik Audé

Linda

Michelle Lombardo

Julie

Jana Kramer

Bed, Bath & Beyond Guy

Nick Swardson

Dr. Bergman

Sidney Ganis

Doctor Bergman

Sid Ganis

Watsuhita Executive

Mio Takada

Watsuhita Head Executive

Michael Yama

Watsuhita Executive

Eiji Inoue

Watsuhita Executive

Toshi Toda

Ancient Executive

George K. Eguchi

Male Nurse

Frank Coraci

Doctor

Timothy P. Herlihy

Jogger

Iryna Blokhina

Michael at 10 Years Old

Emilio Cast

Doctor

Tim Herlihy

Lakeside Camp Boy

Willy Goldstein

Lakeside Camp Girl

Lily Mo Sheen

Kathy O'Doyle

Carolyn Hennesy

Samantha's Friend

Elena Patten

Samantha's Friend

Cheyenne Alexis Dean

Ping Woo

Elliot Cho

Ping Woo's Father

Alan Au

Firecracker Teen

Ryan Keiser

Ping Woo

Elliott Cho

Firecracker Teen

Christopher Gutierrez

Firecracker Teen

Nickole Reyes

Firecracker Teen

Brianna Davis

Firecracker Teen

Christopher Levy

Firecracker Teen

Rob Jones

Habeeboo Entourage

Manish Goyal

Habeeboo Entourage

Marco Khanlian

Habeeboo Entourage

Ahmad Jordan

Habeeboo Entourage

Nick Hodaly

Habeeboo Entourage

Marco Khan

Habeeboo Entourage

Alireza Tanbakoochi

Bandleader

John Pagano

Singer

Dolores O'Riordan

Aunt Peggy

Sally Insul

Firecracker Teen

Brianne Davis

Prince Habeeboo

Rob Schneider

Newman Employee

Billy Slaughter

Narrator of Michael's Past

James Earl Jones

Hot Assistant

Elizabeth DeCicco

Hot Employee

Abra Chouinard

Singing Driver

Terry Crews

Ping Woo's Grandfather

Howard Fong

Ammer in SAP scene

Jorge Garcia

Office Worker

Tracy Britton

Best Man

Jason Sandler

Punk Chick

Celeste Thorson

Wedding Guest

Lana Titov

Lakeside Camp Boy

Kyle Brody

Director

Frank Coraci