Jack Black Dewey Finn
Jery Hewitt Stunt Coordinator
Joan Cusack Rosalie Mullins
Amy Sedaris Mrs. Haynish
Miranda Cosgrove Summer Hathaway
Frank Whaley Battle of the Bands Director (uncredited)
Sarah Silverman Patty Di Marco
Mike White Ned Schneebly, Screenplay
Richard Linklater Director
Nicky Katt Razor
Kevin Alexander Clark Freddy Jones
Joey Gaydos Jr. Zack
Rivkah Reyes Katie
Aleisha Allen Alicia
Andrew Weisblum Assistant Editor
Lee Wilkof Mr. Green
Adesola A. Osakalumi Choreographer
Catherine A. Callahan Concert Goer (uncredited)
Karin Wiesel Set Decoration
Kate McGregor-Stewart Mrs. Lemmons
Peter Epstein Stunts
Mandy Siegfried Female Employee
Joanna Adler Summer's Mother
Chris Stack Doug
Angelo Massagli Frankie
Sandra Adair Editor
Scott Rudin Producer
Karen Patch Costume Design
David Shumbris Stunts
Cole Hawkins Leonard
Suzzanne Douglas Tomika's Mother
Tim Hopper Zack's Father
Bruce MacCallum "B" Camera Operator
Ilene Starger Casting
Joseph E. Iberti Unit Production Manager
Sharon Washington Alicia's Mother
Robert Tsai Lawrence
Bob Becchio First Assistant "B" Camera
Vince Cupone Stunts
Stephanie Finochio Stunts
Jamie Vergan Concert Goer (uncredited)
Michelle L. Keiser Second Assistant Director
Jordan-Claire Green Michelle
Rod Calarco Second Assistant "B" Camera
Tina McKissick Stunts
Z Infante Gordon
Alan D'Angerio Hairstylist
Bob Colletti Stunts
Carlos Velazquez Musician
Don Hewitt Sr. Stunt Coordinator
Janice Wilde Casting Associate
Zoe E. Rotter Casting Assistant
Heather Goldenhersh Sheila
Jane DeNoble Billy's Mom (uncredited)
Riley G. Matthews, Jr. Blood Brothers MC Biker (uncredited)
Eric Swanek First Assistant Camera
Lucas Babin Spider
Ian O'Malley Radio Exec
Jason De Bari Art Department Coordinator
Kim Brockington Leonard's Mother
MacIntyre Dixon Bus Driver
Adam Pascal Theo
Chris Ann Pappas Assistant Costume Designer
Cedric Cannon Leonard's Dad (uncredited)
Roz Music Makeup Artist
Caitlin Hale Marta
Kimberly Grigsby Mrs. Sheinkopf
Robert Lin Lawrence's Father
Elle Key Concert Goer
Jeremy Conway Production Design
Adam Scher Art Direction
Sandi Figueroa Costumer