Steve Martin character Tom Baker
Eugene Levy character Jimmy Murtaugh
Bonnie Hunt character Kate Baker
Tom Welling character Charlie Baker
Piper Perabo character Nora Baker-McNulty
Carmen Electra character Sarina Murtaugh
Jaime King character Anne Murtaugh
Hilary Duff character Lorraine Baker
Taylor Lautner character Eliot Murtaugh
Alyson Stoner character Sarah Baker
Jonathan Bennett character Bud McNulty
Jacob Smith character Jake Baker
Liliana Mumy character Jessica Baker
Morgan York character Kim Baker
Kevin Schmidt character Henry Baker
Forrest Landis character Mark Baker
Brent Kinsman character Nigel Baker
Shane Kinsman character Kyle Baker
Blake Woodruff character Mike Baker
Alexander Conti character Kenneth Murtaugh
Melanie Tonello character Becky Murtaugh
Robbie Amell character Daniel Murtaugh
Courtney Fitzpatrick character Lisa Murtaugh
Madison Fitzpatrick character Robin Murtaugh
Shawn Roberts character Calvin Murtaugh
William Copeland character The Commodore
Peter Keleghan character Mike Romanow
Sam Kalilieh character Doctor
Damon Runyan character Tennis Pro
Graham Losee character Theatre Usher
Seth Howard character Clam Bake Server
Matthew Knight character Theatre Kid
Lee MacDougall character Doobner Dad
Jenny Parsons character Doobner Mom
Dylan Rosenthal character Doobner Older Son
Haylee Wanstall character Doobner Daughter
Ely Henry character Doobner Younger Son
Tre Smith character Security Guard
Adam Shankman character Clam Bake Chef
Shawn Levy character Hospital Intern
Enid Rose character Announcer at Graduation
Kristen Dulmage character Clam Bake Piano Player
Ben Falcone character Theatre Patron
Kelly Keaton character Theatre Patron
Phillip Brock character Theatre Patron
Juliette Goglia character Theatre Patron
Sara Van Horn character Theatre Patron
Nancy Daly character Theatre Patron
Kathryn Joosten character Theatre Patron
Resmine Atis character Theatre Patron (uncredited)
John Eric Brown character Train passenger (uncredited)
Michael Comrie character Sailor (uncredited)
Jonathan Flanigan character EMT (uncredited)
Talia Russo character Lifeguard (uncredited)
Michael Sercerchi character Canoe Operator (uncredited)
Konstantin Shaburov character Waiter at the Party (uncredited)
