Paulie Bleeker

Michael Cera

Juno MacGuff

Ellen Page

Vanessa Loring

Jennifer Garner

Mark Loring

Jason Bateman

Leah

Olivia Thirlby

Bren MacGuff

Allison Janney

Mac MacGuff

J.K. Simmons

Rollo

Rainn Wilson*

Gerta Rauss

Eileen Pedde

Rollo

Rainn Wilson

Daniel Clark

Steve Rendazzo

Bleeker's Mom

Darla Vandenbossche

Rendazo, Steve

Daniel Clark

Vijay

Aman Johal

Su-Chin

Valerie Tian

Punk Receptionist

Emily Perkins

Ultrasound Technician

Kaaren de Zilva

Guy Lab Partner

Steven Christopher Parker

Girl Lab Partner

Candice Accola

Chemistry Teacher

Cut Chemist

Nurse

Kirsten Williamson

Pretty-to-Goth Girl

Emily Tennant

Liberty Bell

Sierra Pitkin

Katrina De Voort

Ashley Whillans

Track Announcer/Dad Smile Photo

Jeff Witzke

Tough Girl

Eve Harlow

Keith

Colin McSween

Nurse

Kirsten Alter

Sex Ed Teacher

Peggy Logan

RPG Nerd

Cameron Bright

Vanessa's Friend #1

Wendy Russell

Vanessa's Friend #2

Robyn Ross

Delivery Room Doctor

Joy Galmut

Dancing Elk Track Team

Brandon Barton

Director

Jason Reitman