Jack Black Dewey Finn
Joan Cusack Rosalie Mullins
Miranda Cosgrove Summer Hathaway
Sarah Silverman Patty Di Marco
Amy Sedaris Mrs. Haynish
Frank Whaley Battle of the Bands Director (uncredited)
Mike White Screenplay, Ned Schneebly
Jery Hewitt Stunt Coordinator
Nicky Katt Razor
Joanna Adler Summer's Mother
Richard Linklater Director
Karen Patch Costume Design
Jim McConkey Steadicam Operator
Sandi Figueroa Costumer
Ilene Starger Casting
Rivkah Reyes Katie
Robert Schleinig Set Dresser
Martin Lasowitz Property Master
David Shumbris Stunts
Joseph E. Iberti Unit Production Manager
Scott Rudin Producer
Kate McGregor-Stewart Mrs. Lemmons
Tim Hopper Zack's Father
Cheryl Kilbourne-Kimpton Costume Supervisor
Felice Diamond Makeup Artist
Catherine A. Callahan Concert Goer (uncredited)
Adam Pascal Theo
Adam Scher Art Direction
Bob Colletti Stunts
Kate Edwards Costume Supervisor
Aleisha Allen Alicia
Peter Epstein Stunts
Michael Cambria Second Assistant Camera
Alan D'Angerio Hairstylist
Cedric Cannon Leonard's Dad (uncredited)
Shawnna Thibodeau Stunts
Steve Nicolaides Executive Producer
Kim Jennings Assistant Art Director
Sharon Washington Alicia's Mother
Angelo Massagli Frankie
Stephanie Finochio Stunts
Andrew Weisblum Assistant Editor
Zoe E. Rotter Casting Assistant
Rogier Stoffers Director of Photography
Lee Wilkof Mr. Green
Suzzanne Douglas Tomika's Mother
Eric Swanek First Assistant Camera
Jerry Popolis Assistant Hairstylist
Don Hewitt Sr. Stunt Coordinator
Nancy Cabrera Foley Artist
Heather Goldenhersh Sheila
Mandy Siegfried Female Employee
Kim Brockington Leonard's Mother
Bruce MacCallum "B" Camera Operator
Wally Dunn Gym Teacher
MacIntyre Dixon Bus Driver
Karen Nazarov Groupie (uncredited)
Donald J. Hewitt Jr. Stunts
Jordan-Claire Green Michelle
James Hosey Marco
Lucas Babin Spider
Z Infante Gordon
Roz Music Makeup Artist
Lucas Papaelias Neil
Jamie Vergan Concert Goer (uncredited)
Sandra Adair Editor
Johnny Sullivan Guy in Crowd Who Catches Dewey (uncredited)
Vince Cupone Stunts
Sam Hoffman First Assistant Director
Kathleen McNenny Freddy's Mother
Cole Hawkins Leonard
Robert Lin Lawrence's Father