Zac Efron

Mike O'Donnell

Leslie Mann

Scarlett O'Donnell

Thomas Lennon

Ned Gold

Michelle Trachtenberg

Maggie O'Donnell

Sterling Knight

Alex O'Donnell

Matthew Perry

Mike O'Donnell (Adult)

Tyler Steelman

Ned Gold (Teen)

Allison Miller

Scarlett (Teen)

Adam Gregory

Dom

Hunter Parrish

Stan

Mario Cassem

Samir

Kat Graham

Jamie

Tiya Sircar

Samantha

Melissa Ordway

Lauren

Melora Hardin

Principal Jane Masterson

Brian Doyle-Murray

Janitor

Josie Loren

Nicole

Jim Gaffigan

Coach Murphy

Randy Gordon

Photographer

Collette Wolfe

Wendy

Tommy Dewey

Roger

Linda Miller

Female Janitor

Lorna Scott

Secretary

Kodi Kitchen

Hostess

Ellis Williams

Bailiff

Diana Maria Riva

Judge

Jeff Snyder

Waiter

Antonio Todd

Referee (1989)

Angee Hughes

Waitress

Ed Ackerman

School Cop

Will Schaub

Referee

Loren Lester

Mike's Lawyer

Alexander George

Kid in Hallway

Nicole Sullivan

Naomi

Margaret Cho

Mrs. Dell

Larry Poindexter

Dean

Bubba Lewis

Dorky Kid (Ned's Party)

Chris Valenti

Syracuse Scout (1989)

G. Lane Hillman

Kevin (1989)

Hope Riley

Girl (Wyatt)

Jeanine Jackson

Scarlet's Lawyer

Gregory Sporleder

Ohio Scout

Keith Oney

Guy in Crowd

Leonard Wu

Kid (Office)

Liana Blackburn

Cheerleader (1989)

Lindsay Taylor

Cheerleader (1989)

Danielle E. Hawkins

Cheerleader (1989)

Shelby Rabara

Cheerleader (1989)

Katrina Norman

Cheerleader (1989)

Tiana Brown Gandelman

Cheerleader (1989)

Rhapsody Violetti

Cheerleader (1989)

Taisha Monique Clark

Cheerleader (1989)

Vanessa Lee Chester

Cheerleader

Chanel Malvar

Cheerleader

Tyne Stecklein

Cheerleader

Galen Hooks

Cheerleader

Kiara Ely

Cheerleader

Mihran Kirakosian

Cheerleader

Rachele Brooke Smith

Hammer Dancer

Jesse Heiman

Mascot

Dres Reid

Cheerleader

Christopher Scott

Hammer Dancer

Eric McCoy

Hammer Dancer

Raymond Chacon

Jazz

Megan Galiber

Girl #2

Renée King

ROTC Leader

Jordan Schatz

Mr. Adams

Jaclyn Matfus

Party Girl

Justin C. Todd

Football Player

Keith Oney

Guy in Crowd (uncredited)