Undeclared

Jay Baruchel

Steven Karp

Carla Gallo

Lizzie Exley

Charlie Hunnam

Lloyd Haythe

Monica Keena

Rachel Lindquist

Seth Rogen

Ron Garner

Timm Sharp

Marshall Nesbitt

Loudon Wainwright III

Hal Karp

Jarrett Grode

Perry

Leroy Adams

Adam / Football Player / Samoan

P.B. Smiley

P.B. / Student

Matthew McKane

Frat Guy / Marion / Taint

Christina Payano

Tina Ellroy

Kevin Rankin

Lucien

Jason Segel

Eric

Amy Poehler

Hillary

Jenna Fischer

Betty / Sorority Girl

Kevin Hart

Luke

Gerry Bednob

Mr. Burundi

David Krumholtz

Greg

Kyle Gass

Eugene

Samm Levine

Books

Natasha Melnick

Jenni

Lacey Beeman

Brandi

Jake Hoffman

Lee

Jeremy Howard

Totem Pole

Seth St. Laurent

Beast Whore

Kevin Christy

Pledge

Busy Philipps

Kelly

Ben Stiller

Rex

Joel McKinnon Miller

Mr. Nesbitt

Sarah Carter

Evie

Kimberly Stewart

Amanda Haythe

Lizzy Caplan

Beautiful Girl

Simon Helberg

Jack

Tom Welling

Tom

Geoffrey Arend

Jimmy

Adam Alexi-Malle

Professor Burg

Joel Madison

Customer

R.F. Daley

Customer

Mandy Freund

Red Headed Woman

Jennifer Shon

Pretty Girl

Serein Wu

Female Student #1

Will Ferrell

Dave

Elaine Curtis

Pretty Girl

Katharine Towne

Rebecca

Elisa Bocanegra

Nicola

Mark Allan Staubach

Dormie #1

Jonathan Loughran

Jonathan Loughran

jarrett grode

Perry

Greg Mottola

Young Professor

Adam Sandler

Adam Sandler (uncredited)

Allen Covert

Allen Covert (uncredited)

Fred Willard

Professor Duggan

Joanne Cho

Susuki

Amy Wright

Debra

Cathy Lind Hayes

Mrs. Nesbitt

Mary Kay Place

Mrs. Lindquist

Steve Bannos

Dingleberry

Sarah Jane Morris

Jana

Ken Daly

Pizza Guy

David Silverstein

Guy in Elevator

Blake Shields

Henry

Clement Blake

Antonio

Kelly Karbacz

Jane

Alexa Davalos

Susan

Bhavana Kundanmal

Taj

Erica Hubbard

Gloria

Stephanie Lemelin

Tara

Martin Starr

Theo

Youki Kudoh

Kikuki

Casey James Durante

Casemo

Sarah Ann Morris

Janice

Kim Fifield

Alice

Alexandra Breckenridge

Celeste