Steve Martin

Tom Baker

Eugene Levy

Jimmy Murtaugh

Bonnie Hunt

Kate Baker

Tom Welling

Charlie Baker

Piper Perabo

Nora Baker-McNulty

Hilary Duff

Lorraine Baker

Carmen Electra

Sarina Murtaugh

Jaime King

Anne Murtaugh

Taylor Lautner

Eliot Murtaugh

Alyson Stoner

Sarah Baker

Jonathan Bennett

Bud McNulty

Jacob Smith

Jake Baker

Liliana Mumy

Jessica Baker

Morgan York

Kim Baker

Kevin G. Schmidt

Henry Baker

Forrest Landis

Mark Baker

Brent Kinsman

Nigel Baker

Shane Kinsman

Kyle Baker

Blake Woodruff

Mike Baker

Alexander Conti

Kenneth Murtaugh

Melanie Tonello

Becky Murtaugh

Robbie Amell

Daniel Murtaugh

Courtney Fitzpatrick

Lisa Murtaugh

Madison Fitzpatrick

Robin Murtaugh

Shawn Roberts

Calvin Murtaugh

William Copeland

The Commodore

Peter Keleghan

Mike Romanow

Sam Kalilieh

Doctor

Damon Runyan

Tennis Pro

Graham Losee

Theatre Usher

Seth Howard

Clam Bake Server

Matthew Knight

Theatre Kid

Lee MacDougall

Doobner Dad

Jenny Parsons

Doobner Mom

Dylan Rosenthal

Doobner Older Son

Haylee Wanstall

Doobner Daughter

Ely Henry

Doobner Younger Son

Tre Smith

Security Guard

Adam Shankman

Clam Bake Chef

Shawn Levy

Hospital Intern

Enid Rose

Announcer at Graduation

Kristen Dulmage

Clam Bake Piano Player

Ben Falcone

Theatre Patron

Kelly Keaton

Theatre Patron

Phillip Brock

Theatre Patron

Juliette Goglia

Theatre Patron

Sara Van Horn

Theatre Patron

Nancy Daly

Theatre Patron

Kathryn Joosten

Theatre Patron

Resmine Atis

Theatre Patron (uncredited)

John Eric Brown

Train passenger (uncredited)

Michael Comrie

Sailor (uncredited)

Jonathan Flanigan

EMT (uncredited)

Talia Russo

Lifeguard (uncredited)

Konstantin Shaburov

Waiter at the Party (uncredited)