Tom
Joseph Gordon-Levitt
Summer
Zooey Deschanel
Douche
Ian Reed Kesler
Bus Driver
Darryl Alan Reed
Employee #1
Valente Rodriguez
New Secretary
Yvette Nicole Brown
Partygoer
Nicole Vicius
Another Partygoer
Natalie Boren
Rhoda
Maile Flanagan
Usher
Darryl Sivad
Minister
Gregory A. Thompson
Man
Michael Bodie
McKenzie
Geoffrey Arend
Mime
John Mackie
Cupid
Jacob Stroop
Wedding Singer
Kevin Michael
Grossman
Sid Wilner
Narrator (voice)
Richard McGonagle
French Narrator (voice)
Jean-Paul Vignon
Dancer
Bryan Anthony
Sybil Azur
Cheryl Baxter
Gustavo Carr
Rachel
Chloë Grace Moretz
John R. Corella
Nadine Ellis
Alejandro Estornel
Nathaniel Flatt
Reshma Gajjar
Tiffany Granath
Jennifer Hamilton
Brandon Henschel
Michael Higgins
Kenneth Hughes
Paul
Matthew Gray Gubler
Alexandra Nicole Hulme
John Jacquet Jr.
Jennifer Lee Keyes
Tim Lacatena
Rebecca Lin
Gelsey Weiss
Katie Malia
Anthony Marciona
Christopher Martinez
Vivian Nixon
Vance
Clark Gregg
Tracy Phillips
Nathan Prevost
Jamie Shea
Ryan Thomas
Christian Vincent
Jull Weber
Summer - Age 12 (uncredited)
Olivia Howard Bagg
The Puma (uncredited)
Jason Robinson
Marcus (uncredited)
Chris Connell
Charlie (uncredited)
Samantha Krutzfeldt
Millie
Patricia Belcher
Summer Lookalike (uncredited)
Kathryn Weisbeck
Eileen Álvarez
Sarah (uncredited)
Jennifer Hetrick
Tavern Patron (uncredited)
Pleasant Wayne
Alison
Rachel Boston
Autumn
Minka Kelly
Millie's New Husband
Charles Walker
Music Supervisor
Andrea von Foerster
Original Music Composer
Mychael Danna
Still Photographer
Tony Friedkin
Stunt Coordinator
Al Goto
Rob Simonsen
Screenplay
Scott Neustadter
Director of Photography
Eric Steelberg
Michael H. Weber
Director
Marc Webb
John Koyama
Producer
Mark Waters
Editor
Alan Edward Bell
Mason Novick
Steven J. Wolfe
Jessica Tuchinsky
Choreographer
Michael Rooney
Camera Car
Grady Allen Bishop
Driver
Costume Design
Hope Hanafin
Script Supervisor
Renetta G. Amador
Sound Re-Recording Mixer
Gary Gegan
Unit Production Manager
Jenny Hinkey
Sound mixer
Lori Dovi
Sound Designer
Piero Mura
Matthew Iadarola
Co-Producer
Scott Hyman
Supervising Sound Editor
Production Design
Laura Fox
Camera Operator
Matthew Moriarty
Casting
Eyde Belasco
Music Editor
Jen Monnar
Associate Producer
Veronica Brooks
Assistant Editor
Jennifer Vecchiarello
Art Direction
Charles Varga
Chuck Zlotnick
Steadicam Operator
Costume Supervisor
Marcy Lavender
Set Decoration
Jennifer Lukehart