Season 15

Guest Stars:

Jason Lee, Elton John

Guest Stars:

Justin Timberlake

Guest Stars:

Joan Jett, Jamie Lee Curtis

Guest Stars:

Jon Heder, Teri Hatcher, Kenny Chesney

Guest Stars:

Calista Flockhart, Harland Williams

Guest Stars:

Cole Sprouse, Dylan Sprouse, Eva Longoria

Guest Stars:

Adrien Brody, Alan Jackson

Guest Stars:

Aaron Neville, Diana Krall, Magic Johnson, Evangeline Lilly

Guest Stars:

Ashton Kutcher, Jenna Fischer

Guest Stars:

Bill O'Reilly, Jessica Simpson

Guest Stars:

John Mayer, Chris Matthews, Wanda Sykes

Guest Stars:

Helen Mirren, B. J. Novak

Guest Stars:

Michael Clarke Duncan, Rod Stewart, Lisa Lampanelli

Guest Stars:

Bob Newhart, Kristin Chenoweth

Guest Stars:

Ray LaMontagne, Bradley Whitford

Guest Stars:

Annika Sörenstam, Fergie, Tina Fey

Guest Stars:

Tiger Woods, Chingy, Emeril Lagasse

Guest Stars:

Arnold Schwarzenegger, Heidi Klum

Guest Stars:

Chris Young, Sandra Bullock, Michael Caine

Guest Stars:

Edie Brickell, Ali Larter, Terry Bradshaw

Guest Stars:

Hugh Jackman, Tim McGraw

Guest Stars:

Jennifer Love Hewitt, Barry Manilow, Tim Burton

Guest Stars:

Sarah McLachlan, Annette Bening

Guest Stars:

Kevin Federline, Sally Field

Guest Stars:

JoJo, John Landis

Guest Stars:

Carrie Underwood, Tim Allen

Guest Stars:

Marilyn Manson, Sharon Osbourne

Guest Stars:

Emma Thompson, Regina Spektor, Spencer Breslin

Guest Stars:

John Stamos, 'Weird Al' Yankovic

Guest Stars:

Kellie Pickler, Rachael Ray, Russell Crowe

Guest Stars:

America Ferrera, Hugh Laurie

Guest Stars:

Courtney Love, Brad Garrett

Guest Stars:

Fred Willard, Tony Bennett, Ellen DeGeneres

Guest Stars:

Sacha Baron Cohen, Martha Stewart

Guest Stars:

Patricia Arquette, Sharon Stone, Vince Gill

Guest Stars:

Rachel Weisz, Nick Cannon

Guest Stars:

Emilio Estevez, D.L. Hughley, Josh Groban

Guest Stars:

Buddy Guy, Wilmer Valderrama, Kate Winslet

Guest Stars:

Demi Moore, Ron Livingston, Chris Cornell

Guest Stars:

Catherine O'Hara, Kid Rock, Denzel Washington, Jerry Lee Lewis

Guest Stars:

Ellen Pompeo, Nelly Furtado

Guest Stars:

Marisa Petroro, Nelly Furtado, Howie Mandel

Guest Stars:

Ralphie May, Kristin Davis

Guest Stars:

Katharine McPhee, Cameron Diaz, Isaac Mizrahi

Guest Stars:

Bob Saget, Lucy Liu, Snoop Dogg

Guest Stars:

Al Gore, Fantasia Barrino

Guest Stars:

Josh Duhamel, Morgan Freeman

Guest Stars:

Taylor Hicks, Maggie Gyllenhaal

Guest Stars:

Corinne Bailey Rae, Cate Blanchett, Larry the Cable Guy

Guest Stars:

LaDainian Tomlinson, KT Tunstall, Dennis Miller

Guest Stars:

Paulina Rubio, Jack Black

Guest Stars:

Mel Gibson, Ludacris, Bil Dwyer

Guest Stars:

Seal, Parminder Nagra, Sylvester Stallone

Guest Stars:

Edward Norton, Jimmy Carter

Guest Stars:

Brad Paisley, Jamie Foxx

Guest Stars:

Dakota Fanning, Aaron Eckhart, Dee Snider

Guest Stars:

Naomi Watts, Leonardo DiCaprio

Guest Stars:

Tobey Maguire, Sarah McLachlan, Jules Sylvester

Guest Stars:

Scott Weiland, Samuel L. Jackson

Guest Stars:

Jennifer Hudson, Robert De Niro

Guest Stars:

Anthony Cumia, Gregg Hughes, Matthew McConaughey

Guest Stars:

Dustin Hoffman

Guest Stars:

George Clooney, John McCain

Guest Stars:

Masi Oka, Justin Timberlake

Guest Stars:

Hilary Swank

Guest Stars:

Terry Bradshaw

Guest Stars:

Kiefer Sutherland, Chris Daughtry, Betty White

Guest Stars:

Ben Affleck, Jewel

Guest Stars:

Terri Irwin, John Edwards

Guest Stars:

Helen Mirren, Isaac Mizrahi

Guest Stars:

Common

Guest Stars:

Paula Abdul, Tyrese Gibson, D.L. Hughley

Guest Stars:

Matt Lauer

Guest Stars:

Meredith Vieira, Ryan Reynolds, Robin Thicke

Guest Stars:

Five for Fighting, James Woods, Lisa Lampanelli

Guest Stars:

Shad Moss, Jennifer Garner

Guest Stars:

Jon Cryer

Guest Stars:

Sienna Miller, Phyllis Diller, Branford Marsalis

Guest Stars:

Wanda Sykes

Guest Stars:

Bob Saget, Rebecca Romijn

Guest Stars:

Katharine McPhee, Mary Lynn Rajskub, Bill Cosby

Guest Stars:

Ivanka Trump, Diane Keaton

Guest Stars:

Daniel Powter, America Ferrera, Forest Whitaker

Guest Stars:

Christina Aguilera

Guest Stars:

Cuba Gooding Jr., Tara Conner, Game

Guest Stars:

Jennifer Hudson, Alison Krauss, Clint Eastwood, John Waite

Guest Stars:

Tyler Perry

Guest Stars:

Hugh Grant, Norah Jones

Guest Stars:

Mat Kearney, Mark Wahlberg

Guest Stars:

Drew Barrymore, Solomon Burke

Guest Stars:

Nicolas Cage

Guest Stars:

Dennis Miller

Guest Stars:

Beyoncé, Kenny Wayne Shepherd, Charles Barkley

Guest Stars:

Tom Vilsack, Dustin Kensrue, Jim Carrey

Guest Stars:

Teri Hatcher, Omarion

Guest Stars:

Randy Jackson, Ryan Seacrest, Simon Cowell

Guest Stars:

Rodney Atkins, Bill Maher

Guest Stars:

Jaime Pressly, Gordon Ramsay

Guest Stars:

Peter O'Toole, Nancy Pelosi

Guest Stars:

William H. Macy, John Mellencamp, Nancy Pelosi

Guest Stars:

Courteney Cox, Richard Roeper

Guest Stars:

Katt Williams, John Travolta

Guest Stars:

Tim Allen

Guest Stars:

Chris Hansen, Howie Mandel

Guest Stars:

Gerard Butler, Queen Latifah

Guest Stars:

Mark Wahlberg, Brad Garrett

Guest Stars:

Andy Richter, Sandra Bullock

Guest Stars:

Bailee Madison, Minnie Driver

Guest Stars:

Dan Rather, Lloyd, Andrew Zimmern

Guest Stars:

Mary Lynn Rajskub, Musiq, Terry Bradshaw

Guest Stars:

Terrence Howard

Guest Stars:

Paolo Nutini, Will Ferrell

Guest Stars:

Nick Nolte

Guest Stars:

MIKA, Pete Rose, Quentin Tarantino

Guest Stars:

Jeff Foxworthy

Guest Stars:

Hilary Swank, Carlos Mencia

Guest Stars:

Campbell Brown, Johnny Mathis, Dave Koz

Guest Stars:

Amy Poehler

Guest Stars:

Kurt Russell, Shia LaBeouf, Hilary Duff

Guest Stars:

Gerard Butler, Tim McGraw

Guest Stars:

Jennifer Love Hewitt

Guest Stars:

Craig T. Nelson, Molly Shannon

Guest Stars:

John Legend, Jeremy Piven, Jenna Fischer

Guest Stars:

Rose McGowan, Anthony Hopkins

Guest Stars:

Patty Griffin, Jonathan Rhys Meyers, Jamie Lee Curtis

Guest Stars:

Rickie Lee Jones, Jesse James, Wanda Sykes

Guest Stars:

Julia Louis-Dreyfus, Nancy Pelosi

Guest Stars:

Rainn Wilson

Guest Stars:

Ali Wentworth, Luke Wilson, Lily Allen

Guest Stars:

Eddie Izzard

Guest Stars:

Tobey Maguire, Tori Spelling

Guest Stars:

Sanjaya Malakar, Jack Black

Guest Stars:

Kevin Bacon, Hayden Panettiere, Michael Phelps

Guest Stars:

Zach Braff, Joss Stone

Guest Stars:

Amy Winehouse, Sig Hansen, Bill Maher

Guest Stars:

Mavis Staples

Guest Stars:

Venus Ramey, Conan O'Brien

Guest Stars:

Oscar de la Hoya, Eric Bana

Guest Stars:

Patti Smith, Phil McGraw, Rove McManus

Guest Stars:

Mitt Romney, D.L. Hughley

Guest Stars:

Alan Jackson, Bryce Dallas Howard, Howie Mandel

Guest Stars:

Elsie McLean

Guest Stars:

Mike Myers

Guest Stars:

Leslie Feist, Larry the Cable Guy, Matthew Fox

Guest Stars:

Antonio Banderas

Guest Stars:

Cameron Diaz, Peter Graves, Nelly Furtado

Guest Stars:

Bill Richardson, Miranda Lambert

Guest Stars:

Jordin Sparks, Taylor Hicks, Blake Lewis, Dominic Monaghan

Guest Stars:

Feodor Lark, Orlando Bloom

Guest Stars:

Felicity Huffman, Dolores O'Riordan, Andrew Zimmern

Guest Stars:

Jimmy Fallon, Jamie Foxx

Guest Stars:

Nola Ochs, Simon Cowell

Guest Stars:

Demi Moore, Angélique Kidjo, Ziggy Marley, Judd Apatow

Guest Stars:

Arnold Schwarzenegger, Debra Messing

Guest Stars:

Daniel Tosh, Jordin Sparks

Guest Stars:

Dwight Yoakam, Dennis Miller

Guest Stars:

Lucinda Williams, Jessica Alba, Seth Rogen

Guest Stars:

Rihanna, George Clooney

Guest Stars:

Cat Deeley, Chelsea Handler, Chris Cornell

Guest Stars:

Josh Flitter, Don Rickles

Guest Stars:

Kenny Smith

Guest Stars:

John Mayer, Wanda Sykes

Guest Stars:

Fred Thompson, Lauren Graham, Toby Keith

Guest Stars:

James Morrison, Shia LaBeouf, Terry Bradshaw

Guest Stars:

Téa Leoni

Guest Stars:

Avril Lavigne, Bill Cosby

Guest Stars:

Robin Williams, Chelsea Handler

Guest Stars:

Bruce Bowen, Michael Chiklis

Guest Stars:

Samuel L. Jackson, Jesse Malin

Guest Stars:

John Cusack, Tavis Smiley

Guest Stars:

Chip Foose, Kelly Clarkson, Cedric the Entertainer

Guest Stars:

Elizabeth Edwards

Guest Stars:

Michael Moore, Justin Long, Mandy Moore

Guest Stars:

Josh Duhamel, Jason Aldean

Guest Stars:

Phil McGraw

Guest Stars:

Carlos Mencia, Ethan Hawke

Guest Stars:

Daniel Radcliffe, Patton Oswalt

Guest Stars:

Nikki Blonsky

Guest Stars:

John Travolta

Guest Stars:

Jessica Biel, Bill Engvall

Guest Stars:

Minnie Driver, Bill Maher

Guest Stars:

Ryan Adams, Holly Hunter

Guest Stars:

Michael Moore

Guest Stars:

Kevin James

Guest Stars:

Kevin Nealon

Guest Stars:

Mat Kearney, Feodor Lark, Jeff Foxworthy

Guest Stars:

Michael Cera, Jonah Hill

Guest Stars:

Mike Rowe, Seth Green

Guest Stars:

Dennis Miller

Guest Stars:

Fred Thompson, Travis Tritt, Jerome Bettis

Guest Stars:

Chandra Wilson, Phil McGraw

Guest Stars:

Ashley Force Hood, Brad Garrett

Guest Stars:

Denis Leary, Robert Klein

Guest Stars:

Dan Fogler, Kelsey Grammer

Guest Stars:

Vanessa Hudgens, Michael Bublé, Terry Bradshaw

Guest Stars:

Michael Douglas, Tavis Smiley