J.K. Simmons Mac MacGuff
Jason Bateman Mark Loring
Elliot Page Juno MacGuff
Jennifer Garner Vanessa Loring
Candice King Amanda, Girl Lab Partner
Michael Cera Paulie Bleeker
Eve Harlow Tough Girl
John Malkovich Producer
Allison Janney Bren MacGuff
Olivia Thirlby Leah
Rainn Wilson Rollo
Kelli Konop Producer
Nathan Kahane Executive Producer
Emily Tennant Pretty-to-Goth Girl
Valerie Tian Su-Chin
John Dekker Chief Lighting Technician
Cameron Bright RPG Nerd
Jeff Witzke Track Announcer
Mason Novick Producer
Doane Gregory Still Photographer
Sherry Linder-Gygli Key Hair Stylist
Robyn Ross Vanessa's Friend #2
Jason Reitman Director
Darla Fay Bleeker's Mom
Emily Perkins Punk Receptionist
Richard Dwan Jr. Sound Editor
Paul Arthur Hartman Set Dresser
Victoria Down Key Makeup Artist
Eileen Pedde Gerta Rauss
Perry Robertson Supervising Sound Editor
Rickley W. Dumm Sound Editor
Nick South Music Editor
Mindy Marin Casting
Scott Sanders Sound Re-Recording Mixer, Sound Designer
Michael Diner Art Direction
Scott J. Ateah Stunt Coordinator
Jason Blumenfeld First Assistant Director
Steve Saklad Production Design
Monica Huppert Makeup Artist
John Clothier Camera Operator
Kara Lipson Casting
Peter Afterman Music Supervisor
Ian R. C. Levine Second Assistant "B" Camera
Kirsten Alter Nurse
Shane Vieau Set Decoration
Diablo Cody Screenplay
Steven Christopher Parker Guy Lab Partner
Brad Van Arragon Producer
John Beatty Construction Coordinator
Eric Steelberg Director of Photography
Joseph Drake Executive Producer
Monique Prudhomme Costume Design
Sandy Cooper Makeup Artist
Sergio Lavilla Set Dresser
Daniel Clark Steve Rendazo
Marty Coady Best Boy Grip
Kaaren de Zilva Ultrasound Technician
Mateo Messina Original Music Composer
Bryan Korenberg Property Master
Margaret Yen Music Supervisor
Lori West Art Department Coordinator
Russell Smith Producer
Nick Neutra Foley
Sierra Pitkin Liberty Bell
Lianne Halfon Producer
Cut Chemist Chemistry Teacher
Ken S. Polk Sound Re-Recording Mixer
Robert A. Pandini Hairstylist
Michael Mayo Rigging Gaffer
Kimya Dawson Songs
Daniel Dubiecki Executive Producer
Dana E. Glauberman Editor