Justin Long character Bartleby Gaines
Jonah Hill character Sherman Schrader
Blake Lively character Monica Moreland
Adam Herschman character Glen
Columbus Short character Hands
Maria Thayer character Rory
Lewis Black character Uncle Ben
Jim O'Heir character Mr. Schrader
Mark Derwin character Jack Gaines
Ann Cusack character Diane Gaines
Hannah Marks character Lizzie Gaines
Robin Lord Taylor character Abernathy
Diora Baird character Kiki
Lisa Gleave character Kiki's Best Friend
Joe Hursley character Maurice / The Ringers
Jeremy Howard character Freaky Student
Anthony Heald character Dean Van Horne
Ross Patterson character Mike McNaughton
Sam Horrigan character Mike Welsh
Travis Van Winkle character Hoyt Ambrose
Kaitlin Doubleday character Gwynn
Kellan Lutz character Dwayne
Brendan Miller character Wayne
Chantelle Tibbs character Confused Kid
Skyler Stone character S. H. Student in Hallway
Darcy Shean character Mrs. Schrader
Brian Powell character Economics Teacher
Scott Adsit character Drop-off Dad
Lindy Loundagin character Drop-off Mom
Steve Little character Desk Clerk
Parker Quinn character Frat Guy
Artie Baxter character Mike Chambers
Greg Sestero character Frat guy (uncredited)
Sara Jean Underwood character Girl By Pool (uncredited)
