Barry Watson as Dave / Daisey

Michael Rosenbaum as Adam / Adina

Harland Williams as Doofer / Roberta

Melissa Sagemiller as Leah

Tony Denman as Jimmy

Brad Beyer as Spence

Kathryn Stockwood as Patty

Heather Matarazzo as Katie

Yvonne Sciò as Frederique

Kerri Higuchi as Susie

Dublin James Wahlberg as Littlest Pledge

Omar Benson Miller as Big Johnson

Mike Beaver as Big Fat Frat

Rich Ronat as Frat

Brian Gross as Frat

Christopher Leps as Crazed Frat

Daniel Farber as Naked Pledge

Phyllis Lyons as Polly

Peter Scolari as Louis

Bree Turner as Tiffany

Monica Staggs as Tri Pi

Lydia Hull as Tri Pi

Nikki Martin as Tri Pi

Jessica Kiper as Tri Pi

James Daughton as Dave's Dad

Mark Metcalf as John Kloss

Stephen Furst as The Alum

Johnny A. Sanchez as Littlest Alum

Brad Grunberg as Drunk Alum

Bruce French as Dean Blevins

Wendie Jo Sperber as Professor Bendler

Cristen Coppen as Hot Girl

Vanessa Evigan as Hot Girl

Samantha Shelton as Waitress

Brian Posehn as Haggard Alum

Stuart Stone as Valet

Greg Coolidge as Pete

Jessica Morrison as Sorority Girl

Anthony Natale as Deaf Student

Allen Neece as Deaf Student

John Vernon as Old Man

Susie Spear Purcell as Talk Show Host