Ryan Seacrest

Self - Host

Randy Jackson

Self - Judge

Simon Cowell

Self - Judge

Paula Abdul

Self - Judge

Jennifer Lopez

Self - Judge

Keith Urban

Self - Judge

Harry Connick Jr.

Self - Judge

Kara DioGuardi

Self - Judge

Steven Tyler

Self - Judge

Ellen DeGeneres

Self - Judge

Mariah Carey

Self - Judge

Nicki Minaj

Self - Judge

Phillip Phillips

Self - Contestant

Kimberley Locke

Self

Brian Dunkleman

Self - Host

Katie Stevens

Self

Todrick Hall

Self - Contestant

Jennifer Hudson

Self

Peter Frank

Self - Contestant

Chris Daughtry

Self

Jon Peter Lewis

Self

Clay Aiken

Self - Guest Host

Tamyra Gray

Self - Contestant

Carrie Underwood

Self

Ryan Starr

Self - Contestant

Kelly Clarkson

Self - Guest

George Huff

Self

Kellie Pickler

Self

Camile Velasco

Self

Jim Verraros

Self - Contestant

Jasmine Trias

Self

Jordin Sparks

Self - Performer

John Stevens

Self

Ada Vox

Self - Contestant

Ruben Studdard

Self - Audience Member

Arianna Afsar

Self - Contestant

Barry Manilow

Self - Guest Judge

David Foster

Self - Guest Performer

Elliott Yamin

Self

Gwen Stefani

Self

Tony Bennett

Self

Neil Diamond

Self - Performer

Nikki McKibbin

Self - Contestant

Bono

Self

Bo Bice

Self - Contestant

Taylor Hicks

Self

EJay Day

Self - Contestant

LaToya London

Self

Trevor Douglas

Self - Contestant

David Cook

Self

Fantasia Barrino

Self

Antonella Barba

Self

Mary J. Blige

Self - Mentor

Scotty McCreery

Self - Performer

Stevie Wonder

Self - Guest Performer

Kenny Rogers

Self

Martina McBride

Self - Guest Performer

Jon Bon Jovi

Self - Guest Performer

Reese Witherspoon

Self

Diana Ross

Self - Guest Performer

Fergie

Self

Andrea Bocelli

Self - Guest Performer

Lulu

Self - Guest Performer

Barry Gibb

Self

Gladys Knight

Self

Dolly Parton

Self - Guest Performer

Jesse Spencer

Self

Ben Stiller

Self

Peter Noone

Self

Smokey Robinson

Self - Guest Judge

Lisa Tucker

Self - Contestant

Will Makar

Self

Ace Young

Self - Contestant

Nikko Smith

Self

Seal

Self - Performer

Hugh Laurie

Self

Katharine McPhee

Self - Guest Performer

Christina Christian

Self

Anthony Fedorov

Self - Contestant

R. J. Helton

Self

Diana DeGarmo

Self - Contestant

Kimberly Caldwell

Self - Guest Host

Kristin Adams

Self

Justin Guarini

Self - Contestant

Katie Webber

Self - Contestant

Leah LaBelle

Self - Contestant

Gina Glocksen

Self - Contestant

Kris Allen

Self - Performer

Haley Reinhart

Self - Performer

James Durbin

Self - Contestant

Lauren Alaina

Self - Contestant

Adam Lambert

Self - Contestant

Shakira

Self - Guest Performer

Heather Locklear

Self

Lamont Dozier

Self - Guest Judge

Olivia Newton-John

Self - Guest Judge

Verdine White

Self - Guest Judge

Lionel Richie

Self - Guest Judge

Billy Joel

Self

Diane Warren

Self - Guest Judge

Neil Sedaka

Self - Guest Judge

Robin Gibb

Self - Guest Judge

Steven Cojocaru

Self

Elton John

Self - Mentor

Jason Priestley

Self

Mark McGrath

Self - Guest Judge

Gene Simmons

Self - Guest Judge

LL Cool J

Self - Guest Judge

Queen Latifah

Self

Rod Stewart

Self - Guest Performer

Tori Spelling

Self

Melissa Gilbert

Self

Rebecca Romijn

Self

Clive Davis

Self

Todd Bridges

Self

Meat Loaf

Self - Guest

Jewel

Self - Guest Judge

Anita Barone

Self

Robin Thicke

Self - Performer

Andrew Lloyd Webber

Self - Mentor

Bette Midler

Self

Blake Lewis

Self

Céline Dion

Self

Natasha Bedingfield

Self - Performer

Graham Nash

Self - Performer

Rihanna

Self - Performer

Kenny G

Self - Guest

Amaury Nolasco

Self

Jerry O'Connell

Self

Gavin DeGraw

Self

Daniel Powter

Self

LeBron James

Self

P!nk

Self

John Legend

Self

Sasha Cohen

Self

Jeri Ryan

Self

Mandy Moore

Self

Burt Bacharach

Self - Guest

Doug E. Fresh

Self

Eli Manning

Self

Christina Applegate

Self

Al Jarreau

Self - Guest

Micky Dolenz

Self

George Michael

Self - Performer

Jimmy Kimmel

Self - Performer

Jane Kaczmarek

Self - Audience Member (uncredited)

Dionne Warwick

Self - Guest

Marc Anthony

Self

Annie Lennox

Self

Paul Anka

Self - Guest

Prince

Self - Guest

Matt Damon

Self

Guy Sebastian

Self - Audience Member (uncredited)

A. J. Gil

Self

Joel Madden

Self

BeBe Winans

Self

Peyton Manning

Self

Helen Mirren

Self

John McCain

Self

Wolfgang Puck

Self

Helena Bonham Carter

Self

Brad Pitt

Self

CeCe Winans

Self

David Boreanaz

Self

Kevin McNally

Self

Harvey Weinstein

Self

Hillary Clinton

Self

Hugh Grant

Self

Henry Winkler

Self - Audience Member (uncredited)

Shaquille O'Neal

Self

Ray Romano

Self - Interviewee / Audience Member

Kyle Gass

Self

Robin Williams

Ivan 'Bob' Poppanoff the 'Russian Idol'

Sharon Osbourne

Self - Interviewee / Audience Member

Keira Knightley

Self

Kiefer Sutherland

Self

Josh Groban

Self

Snoop Dogg

Self

Parminder Nagra

Self

Chris Kattan

Self

Twiggy

Self

Ewan McGregor

Self

Sarah Michelle Gellar

Self

Rob Lowe

Self

Jason Biggs

Self

Forest Whitaker

Self

Phil McGraw

Self

Antonio Banderas

Self

Tom Cruise

Self

Rob Schneider

Self

Goldie Hawn

Self

Lisa Kudrow

Self

Gwyneth Paltrow

Self

Benji Madden

Self

Gillian Anderson

Self

Teri Hatcher

Self

Eric McCormack

Self

Bernadette Peters

Self

Jack Black

Self

Kevin Bacon

Self

Lady Gaga

Self

Emily Blunt

Self

Kenny Loggins

Self - Guest Judge

Kenny Wayne Shepherd

Self - Guest

Amy Adams

Self

Eric Anthony Lopez

Self - Auditionee

Adriel Herrera

Self - Contestant

Rodesia Eaves

Self - Contestant

Natalie Burge

Self - Contestant

Brad Estrin

Self - Contestant

Justinn Waddell

Self - Contestant

Kelli Glover

Self - Contestant

Christopher Aaron

Self - Contestant

AJ Gil

Self - Contestant

Alexandra Bachelier

Self - Contestant

Christina Christian

Self - Contestant

R.J. Helton

Self - Contestant

Emmy Robbin

Self - Contestant

Tenia Taylor

Self - Contestant

Maria Lingbanan

Self - Contestant

Stephen Silberkraus

Self - Contestant

Becky O'Donohue

Self - Contestant

Paris Bennett

Self - Contestant

Kinnik Sky

Self - Contestant

Kevin Covais

Self - Contestant

Scott Savol

Self - Contestant

Constantine Maroulis

Self - Contestant

Lucky Daye

Self - Contestant

Anwar Robinson

Self - Contestant

Mario Vazquez

Self - Contestant

Vonzell Solomon

Self - Contestant

Celena Rae

Self - Contestant

Mikalah Gordon

Self - Contestant

Jessica Sierra

Self - Contestant

Aloha Mischeaux

Self - Contestant

Matthew Rogers

Self - Contestant

Charly Lowry

Self - Contestant

John Preator

Self - Contestant

Trenyce

Self - Contestant

Bettis Richardson

Self - Contestant

Charles Grigsby

Self - Contestant

Sanjaya Malakar

Self - Contestant

LaKisha Jones

Self - Contestant

David Anthony Hernandez

Self - Contestant

David Archuleta

Self - Contestant

Adore Delano

Self - Contestant

Jason Castro

Self - Contestant

Kristy Lee Cook

Self - Contestant

Brooke White

Self - Contestant

Asia'h Epperson

Self - Contestant

Syesha Mercado

Self - Contestant

Jackie Tohn

Self - Contestant

Anoop Desai

Self - Contestant

Annie Bosko

Self - Contestant

Danny Gokey

Self - Contestant

Jasmine Murray

Self - Contestant

Allison Iraheta

Self - Contestant

Kristen McNamara

Self - Contestant

Felicia Barton

Self - Contestant

Crystal Bowersox

Self - Contestant

Stefano Langone

Self - Contestant

Jacob Lusk

Self - Contestant

Casey Abrams

Self - Contestant

Pia Toscano

Self - Contestant

Jeremy Rosado

Self - Contestant

Joshua Ledet

Self - Contestant

Jessica Sanchez

Self - Contestant

Valentino Vladimirov

Self - Dancer

Lana Del Rey

Self - Performer

Stefan Gordy

Self - Performer

Brian May

Self

Roger Taylor

Self

Katy Perry

Self - Performer

Chris Martin

Self - Performer

Lisa Marie Presley

Self - Performer

Jason Derulo

Self - Performer

Aerosmith

Selves - Performers

Chaka Khan

Self - Performer

John Fogerty

Self - Performer

Jennifer Holliday

Self - Performer

Reba McEntire

Self - Performer

Bruce Gowers

Director

Louis J. Horvitz

Director

Ken Warwick

Director

Nigel Lythgoe

Director

Simon Jones

Producer

John Entz

Producer

Megan Michaels

Producer

Katie Fennelly

Producer

James Breen

Producer

Nigel Lythgoe

Executive Producer

Simon Lythgoe

Producer

Charles Boyd

Producer

Simon Fuller

Executive Producer

Richard Curtis

Executive Producer

Ken Warwick

Executive Producer

Brian Robinson

Producer

Simon Jones

Executive Producer

Melanie Oberman

Producer

Theodore Dimitriou

Producer

Patrick Lynn

Producer

David Goffin

Producer

Beth McNamara

Producer

Toby Gorman

Producer

Ron De Shay

Producer

Norm Betts

Producer

Cécile Frot-Coutaz

Executive Producer

Aaron A. Alpert

Production Assistant

Mariant Medina

Production Assistant

Graham Barclay

Sound Re-Recording Mixer

Simon Fuller

Writer