Allison Janney
Bren MacGuff
Jennifer Garner
Vanessa Loring
Rainn Wilson
Rollo
J.K. Simmons
Mac MacGuff
Jason Bateman
Mark Loring
Elliot Page
Juno MacGuff
Michael Cera
Paulie Bleeker
Cameron Bright
RPG Nerd
Olivia Thirlby
Leah
Eileen Pedde
Gerta Rauss
Daniel Clark
Steve Rendazo
Emily Tennant
Pretty-to-Goth Girl
Emily Perkins
Punk Receptionist
Valerie Tian
Su-Chin
Candice King
Amanda, Girl Lab Partner
Jeff Witzke
Track Announcer
Kirsten Alter
Nurse
Eve Harlow
Tough Girl
Cut Chemist
Chemistry Teacher
Steven Christopher Parker
Guy Lab Partner
Kaaren de Zilva
Ultrasound Technician
Robyn Ross
Vanessa's Friend #2
Darla Fay
Bleeker's Mom