- Jason Biggs
- Paul Tannek
- Mena Suvari
- Dora Diamond
- Zak Orth
- Adam
- Thomas Sadoski
- Chris
- Jimmi Simpson
- Noah
- Greg Kinnear
- Prof. Edward Alcott
- Dan Aykroyd
- Dad
- Twink Caplan
- Gena
- Bobby Slayton
- Sal
- Robert Miano
- Victor
- Mollie Heckerling
- Annie
- Colleen Camp
- Homeless Woman
- Andy Dick
- Another City Worker
- Steven Wright
- Panty Hose Customer
- Brian Backer
- Doctor
- Meredith Scott Lynn
- Dog Loving Girl
- Stuart Cornfeld
- Foreman
- Taylor Negron
- Photographer
- Andrea Martin
- Professor
- Scott Thomson
- Cell Phone Guy
- Kedar Brown
- Jay
- Catherine Black
- Military Jacket Girl
- Rick Demas
- Bouncer
- Sanjay Talwar
- Convenience Cashier
- Tracy Dawson
- Drug Saleswoman
- Carolyn Goff
- Kristen
- Mike Beaver
- Boy at Concert
- Richard Blackburn
- Security Guard
- Billy Otis
- Prisoner
- Jenny Kim
- Student Worker
- Alison Sealy-Smith
- University Official
- Martin Roach
- Veterinarian
- Heidi Weeks
- Saks Saleswoman
- Daniela Olivieri
- Store Tailor
- Kavita Persaud
- Hi Ro Student
- Corwin Hall
- Hi Ro Student
- Andrew Storms
- Hi Ro Student
- Serena Lee
- Hi Ro Student
- Nick Bacon
- Beer Store Clerk
- Valerie Boyle
- Aunt
- Colleen Reynolds
- Aunt
- Jack Jessop
- Grandfather
- Mallory Margel
- Paul's Sister
- Patrick Mark
- Bloody Nose Guy
- Tanja Jacobs
- Party Goer
- Darrin Brown
- Party Goer
- James Barrett
- Guy
- Rob Tinkler
- Bar Patron
- Katherine Giaquinto
- College Girl
- Robinne Fanfair
- College Girl
- Clare Preuss
- College Girl
- Sadie LeBlanc
- College Girl
- Silvana Kane
- College Girl
- Kerri Michalica
- College Girl
- Geoffrey Antoine
- Coffee Counter Guy
- Danny Truelove
- Dancing Kid
- Marc McMulkin
- Dancing Kid
- Jonathon Fernandes
- Dancing Kid
- Tiffany Leonardo
- Dancing Kid
- Good Fridae
- Girl at bar at concert
- Art Alexakis
- Self
- Chantal Cousineau
- Student
- Alan Cumming
- Self / Emcee (uncredited)
- Noah Dalton Danby
- Principal
- Greg Eklund
- Self
- Erin Hill
- Dancer / Lulu (uncredited)
- Forest Lightbody
- (uncredited)
- Donna 'Chipmunk' McCusker
- Student
- Craig Montoya
- Self
- Christy Patrick
- Blond Everclear Fan at Concert
- Paul Puzzella
- T Shirt Seller
- David Spade
- Video Store Clerk
- Kasia Vassos
- High School Student
- Haley Woods
- College Girl
