John Francis Daley

Sam Weir

Linda Cardellini

Lindsay Weir

James Franco

Daniel Desario

Samm Levine

Neal Schweiber

Martin Starr

Bill Haverchuck

Jason Segel

Nick Andopolis

Seth Rogen

Ken Miller

Busy Philipps

Kim Kelly

Joe Flaherty

Harold Weir

Becky Ann Baker

Jean Weir

Jerry Messing

Gordon Crisp

Paul Feig

Alex the Guitarist (uncredited)

Mike White

Chip Kelly

Jeff Judah

Sound Mixer

Gabe Sachs

Drummer (uncredited)

Steve Bannos

Frank Kowchevski

Jon Kasdan

Tommy

Michael Andrews

Scott (uncredited)

Kristy Wu

Mousy Girl

Kevin Ruf

Police Officer

Omri Katz

Brad

Kevin Corrigan

Toby

Percy Daggs III

Mathlete #2

Tava Smiley

Carol

Alexander Gould

Ronnie Johnson

David Krumholtz

Barry Schweiber

Ben Stiller

Agent Meara

Sam McMurray

Dr. Vic Schweiber

Brianna Brown

The Cheerleader

Tom Virtue

Mr. Sampson

Jessica Campbell

Amy Andrews

Claudia Christian

Gloria Haverchuck

Kenn Michael

Calvin

Maura Soden

Mrs. Kent

Lyle Kanouse

Auto Shop Manager

Amy Wheaton

Pretty Girl

Leslie Mann

Miss Foote

Sarah Hagan

Millie Kentner

Bianca Kajlich

Piercing Girl

Trace Beaulieu

Hector Lacovara

Alan Simpson

Tom

Rashida Jones

Karen Scarfolli

Matthew McKane

Mike Stevens

Matt Czuchry

Teenage Guy #1

Ann Dowd

Cookie Kelly

Chauncey Leopardi

Alan White

Jack Conley

Kim Kelly's Stepfather

Shia LaBeouf

Herbert

Bill Chott

Señor O'Hara

Shawnee Free Jones

Jenna Zank

Riley Smith

Todd Schellinger

Joel Hodgson

Discotheque DJ

Ben Foster

Eli

Olivia Hack

Erin

Doug Spinuzza

Frank

Samaire Armstrong

Laurie

David Koechner

Iron Horse Restaurant Waiter

Samantha Shelton

Heidi Henderson

Susan Krebs

Housewife

Thomas F. Wilson

Coach Ben Fredricks

Alexandra Breckenridge

Shelly Weaver

Natasha Melnick

Cindy Sanders

Kayla Ewell

Maureen Sampson

JoAnna Garcia Swisher

Vicki Appleby

Lizzy Caplan

Sara

Jason Schwartzman

Howie Gelfand

Ron Lester

Seidleman

Lauren Hodges

Mathlete

Jarrett Lennon

Colin

Amy Aquino

Mrs. Schweiber

Stephanie Erb

Ms. Yeats

Mark Allan Staubach

Mark

Stephen Lea Sheppard

Harris Trinsky

David Doty

Councilman Ritchie

Steve Higgins

Mr. Fleck

Meagen Fay

Mrs. Kentner

John Apicella

Dr. Melvin Latz

Joel Madison

Mr. Botwinick

Joanna Canton

Cheerleader

Laura Bottrell

Beth

Harriett S. Miller

Mrs. Whitman

Andy Mackenzie

Big Punk

Ashley Power Garner

Popular Girl #2

Cynthia Windham

Audio Visual Teacher

Dave Allen

Jeff Rosso

David Bowe

Salesman

Denalda Williams

Angry Mother

Kevin Tighe

Mr. Andopolis

Pamela Gordon

Chain Smoking Woman