Full cast of On Air with Ryan Seacrest

Ryan Seacrest

Self - Host

87 episodes

Randy Jackson

Self

4 episodes

Simon Cowell

Self

3 episodes

Paula Abdul

Self

3 episodes

Clay Aiken

Self - Performer

2 episodes

David Boreanaz

Self

2 episodes

Flex Alexander

Celebrity Courtyard Correspondent

2 episodes

Anthony Anderson

Self

2 episodes

Dwayne Johnson

Self

2 episodes

Denzel Washington

Self

2 episodes

Kelly Rowan

Self / Self - The O.C.

2 episodes

Tamyra Gray

Self

2 episodes

Lenny Kravitz

Self

1 episode

Stephen Collins

Self

1 episode

Lindsay Lohan

Self

1 episode

Elisha Cuthbert

Self

1 episode

Justin Guarini

Celebrity Courtyard Correspondent

1 episode

Jasmine Trias

Self - American Idol contestant

1 episode

Michelle Trachtenberg

Self

1 episode

Steven Cojocaru

1 episode

Britney Spears

Self - Performer

1 episode

Tom Arnold

1 episode

Carmen Electra

Self

1 episode

John Stevens

Self - American Idol contestant

1 episode

Antonio Sabàto Jr.

Self

1 episode

Catherine Bell

Self

1 episode

Michael Bublé

Self - Performer

1 episode

Andrew Lawrence

Celebrity Courtyard Correspondent

1 episode

Kylie Minogue

Self

1 episode

Kathie Lee Gifford

Self

1 episode

Baby Bash

Self - Performer

1 episode

Hilary Duff

Self

1 episode

Bryan Cranston

Self

1 episode

Sasha Alexander

Self

1 episode

Omarion

Self

1 episode

Marques Houston

Self

1 episode

Kimberly Caldwell

Celebrity Courtyard Correspondent

1 episode

Kristen Stewart

Self

1 episode

Kathy Najimy

Self

1 episode

Breckin Meyer

Self

1 episode

Seal

Self - Performer

1 episode

Daisy Fuentes

Celebrity Courtyard Correspondent

1 episode

Kelly Clarkson

Self - Performer

1 episode

Rob Schneider

Self

1 episode

LisaRaye McCoy

Self

1 episode

Jim Verraros

Celebrity Courtyard Correspondent

1 episode

Arsenio Hall

Self

1 episode

Keiko Agena

Celebrity Courtyard Correspondent

1 episode

Jennifer Love Hewitt

Self

1 episode

Lucy Lawless

Self

1 episode

Carmen Rasmusen

Celebrity Courtyard Correspondent

1 episode

Eliza Dushku

Self

1 episode

Pat Monahan

Self - Train (singer)

1 episode

Johnny Colt

Self - Train (bass)

1 episode

Jimmy Stafford

Self - Train (guitar)

1 episode

Brandon Bush

Self - Train (piano)

1 episode

Scott Underwood

Self - Train (drums)

1 episode

JC Chasez

Self - Performer

1 episode

Sela Ward

Self

1 episode

Jesse Bradford

Self

1 episode

Diego Luna

Self

1 episode

Sharon Osbourne

Self

1 episode

Samaire Armstrong

Self

1 episode

Oprah Winfrey

Self

1 episode

Johnny Depp

Self

1 episode

Ben Stiller

Self

1 episode

Jennifer Garner

Self

1 episode

Jolene Blalock

Self

1 episode

Taylor Hanson

Self - (Hanson) Performer

1 episode

Zac Hanson

Self - (Hanson) Performer

1 episode

Isaac Hanson

Self - (Hanson) Performer

1 episode

Roma Downey

Self

1 episode

Sean Patrick Thomas

Self

1 episode

Trista Sutter

Self - The Bachelorette

1 episode

Ryan Sutter

Self - The Bachelorette

1 episode

Jami Gertz

Self

1 episode

Mark Addy

Self

1 episode

Chuck Woolery

Self

1 episode

Esai Morales

Self

1 episode

Debbie Gibson

Celebrity Courtyard Correspondent

1 episode

Molly Shannon

Self

1 episode

Mekhi Phifer

Self

1 episode

Gisele Bündchen

Self

1 episode

Caroline Dhavernas

Celebrity Courtyard Correspondent

1 episode

Michael Chiklis

Self

1 episode

Ving Rhames

Self

1 episode

Melana Scantlin

Celebrity Courtyard Correspondent

1 episode

Jon Foreman

Self - Switchfoot (singer)

1 episode

Tim Foreman

Self - Switchfoot (bass)

1 episode

Drew Shirley

Self - Switchfoot (guitar)

1 episode

Jerome Fontamillas

Self - Switchfoot (guitar)

1 episode

Chad Butler

Self - Switchfoot (drums)

1 episode

Rebecca Gayheart

Self

1 episode

Regis Philbin

Self

1 episode

Leah LaBelle

Self - American Idol Contestant

1 episode

Jackie Thomas

Self

1 episode

Tyra Banks

Self

1 episode

Murphy Lee

Self - Performer

1 episode

Jermaine Dupri

Self - Performer

1 episode

Cindy Herron

Self - (En Vogue) Performer

1 episode

Terry Ellis

Self - (En Vogue) Performer

1 episode

Maxine Jones

Self - (En Vogue) Performer

1 episode

Nelly Furtado

Self

1 episode

Janice Dickinson

Self

1 episode

Bonnie Hunt

Self

1 episode

Sen Dog

Cypress Hill - Performer

1 episode

B-Real

Cypress Hill - Performer

1 episode

DJ Muggs

Cypress Hill - Performer

1 episode

Eric Bobo

Cypress Hill - Performer

1 episode

Linda Cardellini

Self

1 episode

David Arquette

Self

1 episode

Jamie-Lynn Sigler

Self

1 episode

Ron Perlman

Self

1 episode

Jerry Springer

Self

1 episode

Chris Klein

Self

1 episode

Yoanna House

Self

1 episode

Adam Gontier

Self

1 episode

Neil Sanderson

Self

1 episode

Brad Walst

Self

1 episode

Barry Stock

Self

1 episode

Shannen Doherty

Self

1 episode

Raquel Castro

Self

1 episode

Natasha Henstridge

Self

1 episode

Janet Jackson

Self

1 episode

Tori Amos

Self - Performer

1 episode

Rachel Hunter

Self

1 episode

Susie Castillo

Self

1 episode

Solange

Self

1 episode

Shad Moss

Self

1 episode

Dan Cortese

Self

1 episode

Ashley Scott

Self

1 episode

Rick Springfield

Self - Performer

1 episode

Jerry O'Connell

Self

1 episode

Dolly Parton

Self

1 episode

Anne Hathaway

Self

1 episode

Tracy Morgan

Self

1 episode

Michael Madsen

Self

1 episode

Melissa Joan Hart

Self

1 episode

Robert Schwartzman

Self

1 episode

Louie Stephens

Self

1 episode

Taylor Locke

Self

1 episode

Matthew Winter

Self

1 episode

Ned Brower

Self

1 episode

Kim Delaney

Self

1 episode

Cedric the Entertainer

Self

1 episode

Vanessa Williams

Self

1 episode

Daryl Hannah

Self

1 episode

Kevin Bacon

Self

1 episode

Michael Bacon

Self

1 episode

Quentin Tarantino

Self

1 episode

Lisa Rinna

Self

1 episode

Kevin Pollak

Self

1 episode

Jason Priestley

Self

1 episode

Barry Manilow

Self - Performer

1 episode

Nia Vardalos

Self

1 episode

Usher

Self

1 episode

Gabrielle Union

Self

1 episode

Smokey Robinson

Self - Performer

1 episode

Enrique Iglesias

Self - Performer

1 episode

Reba McEntire

Self

1 episode

Adam Sandler

Self

1 episode

Nicole Richie

Self

1 episode

LeAnn Rimes

Self

1 episode

John Mayer

Self - Performer

1 episode

Donald Trump

Self

1 episode

Missy Elliott

Self

1 episode

Sting

Self

1 episode

Kiefer Sutherland

Self

1 episode

Frankie Muniz

Self

1 episode

Ruben Studdard

Self - Performer

1 episode

Jason Bateman

Self

1 episode

Josh Duhamel

Self

1 episode

Topher Grace

Self

1 episode

Sheryl Crow

Self

1 episode

Mike O'Malley

Self

1 episode

Liza Snyder

Self

1 episode

Jean Louisa Kelly

Self

1 episode

Jon Cryer

Self

1 episode

DJ Spinderella

Self

1 episode

Michelle Branch

Self

1 episode

Bobb'e J. Thompson

Self

1 episode

Jeff Probst

Self

1 episode

Aisha Tyler

Self

1 episode

Jack Osbourne

Self

1 episode

Doris Roberts

Self

1 episode

Sarah McLachlan

Self

1 episode

Bob Guiney

Self

1 episode

Joe Rogan

Self

1 episode

Doug Stanhope

Self

1 episode

Kimberley Locke

Self

1 episode

Greg Kinnear

Self

1 episode

Dakota Fanning

Self

1 episode

Beau Bridges

Self

1 episode

Mischa Barton

Self - The O.C.

1 episode

Adam Brody

Self - The O.C.

1 episode

Rachel Bilson

Self - The O.C.

1 episode

Peter Gallagher

Self - The O.C.

1 episode

Alan Dale

Self - The O.C.

1 episode

Melinda Clarke

Self - The O.C.

1 episode

Navi Rawat

Self - The O.C.

1 episode

Amanda Righetti

Self - The O.C.

1 episode

Alicia Keys

Self

1 episode

Terry Dubrow

Self

1 episode

Jeff Gordon

Self

1 episode