Megan Fox Jennifer
Chris Pratt Roman Duda
J.K. Simmons Mr. Wroblewski
Amanda Seyfried Needy
Adam Brody Nikolai
Lance Henriksen Passing Motorist (uncredited)
Kyle Gallner Colin Gray
Amy Sedaris Needy's Mom
Eve Harlow Goth Girl
Karyn Kusama Director
Johnny Simmons Chip
Emily Tennant Gossiping Girl
Roger Craig Smith ADR & Dubbing
Jason Reitman Producer
Gabrielle Rose Colin's Mom
Megan Charpentier Little Needy
Valerie Tian Chastity
Loyd Bateman Stunts
Adrian Hough Colin's Dad
Jeff Fischer ADR & Dubbing
Cynthia Stevenson Chip's Mom
Marilyn Norry Jonas' Mom
Diablo Cody Executive Producer, Melody Lane Drinking Woman (uncredited), Writer
Garvin Cross Stunts
Todd Scott Stunts
Laura Lee Connery Stunts
Darryl Scheelar Stunts
Krista Bell Stunts
Vicki Davis ADR & Dubbing
Barbara Harris ADR & Dubbing
Genevieve Buechner Goth Girl #2
Brad Kelly Stunts
Bill Fagerbakke Jonas' Dad
Juno Rinaldi Officer Warzak
Carrie Genzel Jennifer's Mom
Theodore Shapiro Original Music Composer
Candus Churchill Nutritionist
Mike Mitchell Stunts
Brad Loree Stunts
Ed Anders Stunt Coordinator, Orderly
Cathy Cavadini ADR & Dubbing
Juan Riedinger Dirk
Andrea Baker ADR & Dubbing
Mike Carpenter Stunts
Randall Poster Music Supervisor
Mindy Marin Casting
Michael Bean Priest
Lanei Chapman ADR & Dubbing
Alan Freedman ADR Mixer
Owen Walstrom Stunts
Richard Dwan Jr. Sound Editor
Hector C. Gika Sound Editor
Dan Joffre Raymundo
Scott J. Ateah Stunt Coordinator
Brett Armstrong Stunts
Byron Brisco Stunts
David Michie ADR & Dubbing
Jason Blumenfeld First Assistant Director
Ryan Ennis Stunts
James Forsyth Extras Casting
Aaron Fors ADR & Dubbing
Anthony David Moyer Stunts
Nesta Chapman Stunts
Josh Emerson Jonas Kozelle
Doane Gregory Still Photographer
Scott Sanders Supervising Sound Editor
David J. Randolph ADR & Dubbing
Dan Redford Stunts
J. Stanley Johnston Sound Re-Recording Mixer
Mitch Paulson Digital Colorist
Jeremy Maxwell ADR & Dubbing
Karissa Tynes Other Girl