Dewey Cox

John C. Reilly

Acting

Darlene Madison

Jenna Fischer

Acting

Pa Cox

Raymond J. Barry

Acting

Edith

Kristen Wiig

Acting

Sam

Tim Meadows

Acting

L'Chaim

Harold Ramis

Directing

Ma Cox

Margo Martindale

Acting

Theo

Chris Parnell

Acting

Dave

Matt Besser

Acting

Awards Show Stage Manager

Nat Faxon

Acting

Dewey Age 8

Conner Rayburn

Acting

Nate

Chip Hormess

Acting

Country Doctor

Terrence Beasor

Acting

Old Bluesman

Honeyboy Edwards

Acting

Harmonica Player

Gerry Black

Acting

Teenage Band

Aron Johnson

Acting

Teenage Band

Jack Donovan Saperstein

Acting

Teenage Band

Taylor Hubert

Acting

Teenage Band

Christopher Hurt

Acting

MC (Teacher)

Matt Price

Acting

Man at Talent Show

John Maynard

Acting

Second Man at Talent Show

E.J. Callahan

Acting

Preacher

Rance Howard

Acting

Bobby Shad

Craig Robinson

Acting

Nightclub Manager

Paul Bates

Acting

Bad Men Bass Player

Patrick Faucette

Acting

Mazeltov

Phil Rosenthal

Writing

Schmendrick

Martin Starr

Acting

Audience Guy at Nightclub

Oscar Dillon

Acting

DJ

Jack McBrayer

Acting

Teen with Pinups

Molly C. Quinn

Acting

The Big Bopper

John Ennis

Acting

Buddy Holly

Frankie Muniz

Acting

Stage Manager

Ed Helms

Acting

Elvis Presley

Jack White

Acting

Beth Anne

Angela Little

Acting

Reefer Girl

Odette Annable

Acting

Bert

Tyler Nilson

Directing

Hotel Groupie with Dewey

Deanna Brooks

Acting

Drug Dealer

Ian Roberts

Acting

Prison Guard

Steve Bannos

Acting

Rehab Nurse

Willow Geer

Acting

Rehab Doctor

David Doty

Acting

Press Conference Reporter

Jack Kehler

Acting

The Maharishi

Gerry Bednob

Acting

Schwartzberg

David Krumholtz

Acting

Engineer

Tim Bagley

Acting

Gail the Television Reporter

Jane Lynch

Acting

Dewdrop

Skyler Gisondo

Acting

Dewey Rahim

Kshitij Pendurkar

Acting

Dreidel L'Chaim

Simon Helberg

Acting

Lil' Nutzzak

Jacques Slade

Acting

Music Video Girl

Danica Rozelle

Acting

Cox Kid

Lurie Poston

Acting

Cox Kid

Maggie Mannion

Art

Jackson Browne

Jackson Browne

Acting

Jewel

Jewel

Acting

Lyle Lovett

Lyle Lovett

Acting

Pierced Eyebrow Girl

Stacey Scowley

Acting

Pierced Lip Girl

Ajla Hodžić

Acting

Ghostface Killah

Ghostface Killah

Acting

The Temptations

Otis Williams

Acting

The Temptations

Ron Tyson

Acting

The Temptations

Terry Weeks

Acting

The Temptations

Joe Herndon

Acting

The Temptations

Bruce Williamson

Acting

Eddie Vedder

Eddie Vedder

Acting

Paul McCartney (uncredited)

Jack Black

Acting

John Lennon (uncredited)

Paul Rudd

Acting

George Harrison (uncredited)

Justin Long

Acting

Ringo Starr (uncredited)

Jason Schwartzman

Acting

The Kid (uncredited)

Patrick J. Adams

Acting

Edith's Father (uncredited)

Clement Blake

Acting

Patrick Duffy (uncredited)

Patrick Duffy

Acting

Morgan Fairchild (uncredited)

Morgan Fairchild

Acting

Different DJ (uncredited)

Paul Feig

Directing

LSD Vision (uncredited)

Amber Hay

Acting

Record Producer (uncredited)

John Michael Higgins

Acting

Older Nate (uncredited)

Jonah Hill

Acting

Dewey's Child (uncredited)

Neil Ironfield

Acting

Cheryl Ladd (uncredited)

Cheryl Ladd

Acting

Cheryl Tiegs (uncredited)

Cheryl Tiegs

Acting

70's African American Woman (uncredited)

Serria Tawan

Acting

Jerry Garcia (uncredited)

Adam Herschman

Acting

Officer Clark

John D. Crawford

Acting