Steve Martin

Stu Preissler

Jack Black

Brad Harris

Owen Wilson

Kenny Bostick

Brian Dennehy

Raymond Harris

Anjelica Huston

Annie Auklet

Rashida Jones

Ellie

Rosamund Pike

Jessica

Dianne Wiest

Brenda Harris

JoBeth Williams

Edith

Anthony Anderson

Bill Clemont

Corbin Bernsen

Gil Gordon

Barry Shabaka Henley

Dr. Neil Kramer

Joel McHale

Barry Loomis

Tim Blake Nelson

Fuchs

Jim Parsons

Crane

Kevin Pollak

Jim Gittelson

Nate Torrence

Ted Simkin

Steven Weber

Rick

Zahf Paroo

Prasad

John Cleese

Historical Montage Narrator (voice)

Paul Campbell

Tony

Cindy Busby

Susie

Greg Kean

Computer Birder

Eva Bourne

Birder's Daughter

Bill Dow

Dr. Paul Elkin

June Squibb

Old Lady

Craig Bockhorn

Lawyer

Joey Aresco

Frank Falucci

Ryan Caltagirone

Frank Jr.

Al Roker

New York Weatherman

Christopher Mann

Security Guard

Jan Bos

Local Newsman (High Island)

Kate Gajdosik

Local Newswoman (High Island)

William Samples

British Tourist

Scott Patey

Birder (High Island)

Marci T. House

Troop Leader

Michael Bean

Waiter

Christopher Redman

Scott

Devon Weigel

Karen

Andrew Wilson

Mike Shin

Gabrielle Rose

Mary Swit

Calum Worthy

Colin Debs

Doreen Ramus

CB Announcer

Terence Kelly

Pete Shackelford

Steve Darling

Anchorage Weatherman

Jon Frankel

Anchorage Anchorman

David James Lewis

Lanky Birder

Jesse Moss

Darren

Kath Dugray

Motel Manager

Morgan Brayton

Ferry Ticket Seller

Sheelah Megill

Nurse

Veena Sood

Nurse Katie

Dee Jay Jackson

Parking Attendant

Calvin Lee

Chinese Waiter

Tshering Garie

Chinese Waitress

Michael Karl Richards

Vicki's Fiancée (uncredited)

Stacey Scowley

Vicki (uncredited)