Jack Black Dewey Finn
Miranda Cosgrove Summer Hathaway
Joan Cusack Rosalie Mullins
Jery Hewitt Stunt Coordinator
Amy Sedaris Mrs. Haynish
Sarah Silverman Patty Di Marco
Frank Whaley Battle of the Bands Director (uncredited)
Richard Linklater Director
Mike White Ned Schneebly, Screenplay
Peter Epstein Stunts
Nicky Katt Razor
Aleisha Allen Alicia
Scott Rudin Producer
Lee Wilkof Mr. Green
Lucas Babin Spider
Tim Hopper Zack's Father
Rivkah Reyes Katie
Kate McGregor-Stewart Mrs. Lemmons
Joey Gaydos Jr. Zack
Adam Pascal Theo
Cole Hawkins Leonard
Suzzanne Douglas Tomika's Mother
Chris Stack Doug
Kevin Alexander Clark Freddy Jones
Andrew Weisblum Assistant Editor
Stephanie Finochio Stunts
Joanna Adler Summer's Mother
Angelo Massagli Frankie
Mandy Siegfried Female Employee
Tina McKissick Stunts
Sandra Adair Editor
Joe Wachowski Concert Goer (uncredited)
Robert Lin Lawrence's Father
Shawnna Thibodeau Stunts
Sharon Washington Alicia's Mother
Donald J. Hewitt Jr. Stunts
Catherine A. Callahan Concert Goer (uncredited)
Joseph E. Iberti Unit Production Manager
Bruce MacCallum "B" Camera Operator
Alan D'Angerio Hairstylist
Elle Key Concert Goer
Lucas Papaelias Neil
Jordan-Claire Green Michelle
Adesola A. Osakalumi Choreographer
Vince Cupone Stunts
MacIntyre Dixon Bus Driver
Lauren Adler Concert Goer (uncredited)
Don Hewitt Sr. Stunt Coordinator
Kathleen McNenny Freddy's Mother
David Shumbris Stunts
Rogier Stoffers Director of Photography
Ryan O'Connor No Vaccancy's Biggest Fan (uncredited)
Johnny Sullivan Guy in Crowd Who Catches Dewey (uncredited)
Heather Goldenhersh Sheila
Ilene Starger Casting
Robert Tsai Lawrence
Edwin Effrein First Assistant Camera
Craig Wedren Original Music Composer
Caitlin Hale Marta
Wally Dunn Gym Teacher
Cedric Cannon Leonard's Dad (uncredited)
Timothy "Speed" Levitch Waiter
Jerry Popolis Assistant Hairstylist
Bob Colletti Stunts
Bob Becchio First Assistant "B" Camera
Zoe E. Rotter Casting Assistant
Kate Edwards Costume Supervisor
Don Kozma Assistant Makeup Artist
Karin Wiesel Set Decoration
Kim Jennings Assistant Art Director
Jamie Vergan Concert Goer (uncredited)
Jane DeNoble Billy's Mom (uncredited)