Kevin Hart, Betty White, Dwight Yoakam

Arnold Schwarzenegger, Chumlee & Rick Harrison, Ziggy Marley

Courteney Cox, Joy Behar, Youngblood Hawke

Bill Maher, Nicole "Snooki" Polizzi, Jenni "JWoww" Farley, Miguel

Emma Stone, Josh Gad, the Whigs

Dustin Hoffman, Big Bad Voodoo Daddy

Ryan Seacrest, Keith Urban, Randy Jackson, Anthony Jeselnik, For King and Country

Ben Affleck, Kristen Bell, Rodriguez

Nicki Minaj, Billy Connolly, the Saturdays

Jessica Simpson, D.L. Hughley, Vintage Trouble

Mark Wahlberg, Ali Wentworth, JJamz

Naomi Watts, Richard Engel, Train

Bob Costas, Big Boi

Sally Field, Michael Kosta, Lord Huron

Dana Carvey, Emmy Rossum, Ben Harper with Charlie Musselwhite

Heidi Klum, Seann Willam Scott, Gary Allan

Dustin Hoffman, Kenny Loggins and Blue Sky Riders

Robert DeNiro, Sherri Shepherd, the Grascals

Catherine Zeta-Jones, Donny Deutsch, Lady Antebellum

Whitney Cummings, Jackie Weaver, Aaron Neville

Aubrey Plaza, Holly Williams

Quvenzhane Wallis, Benh Zeitlin, Lisa Loeb

Wanda Sykes, Branford Marsalis

Hugh Jackman, Jessica Chastain, Michael Bolton

Josh Duhamel, Kathryn Bigelow, Lianne La Havas

Tim McGraw, Bar Refaeli

Amy Adams, Adam Carolla, Hunter Hayes

Seth MacFarlane, Jenna Elfman, Norah Jones

James Spader, Lior Suchard, Far East Movement

Charles Barkley, Bob Fisher, Jewel

Anne Hathaway, Lester Holt, Eli Young Band

Jarod Miller, Colbie Caillat, Gavin DeGraw

Kathy Griffin, David Feherty, FM Radio

Kevin Bacon, Dennis Rodman, Kevin Eubanks

Robin Wright, Bonnie Raitt

Chelsea Handler, Edythe Kirchmaier, Sky Blu

Arsenio Hall, Tristan Prettyman

Meredith Vieira, Richard Roeper, thenewno2

Russell Crowe, Eli Roth, Robert Randolph with the Slide Brothers

Colin Farrell, Joey King, Boz Scaggs

David Duchovny, J.B. Smoove, Father John Misty

Steve Carell, Joey King, Shooter Jennings

Bill O'Reilly, Abigail Breslin, the Mavericks

Halle Berry, Rachel Maddow, Ashley Monroe

Olivia Wilde, Nick Offerman, Buddy Guy and the Experience Hendrix All-Star Band

Jerry Seinfeld, Mark Cuban, Jose James

James Franco, Jay Mohr, Owl City and Yuna

Craig Ferguson, Vera Farmiga, Harper Simon

Morgan Freeman, Rulon Gardner & Henry Cejuda, James Hunter

Jenna Fischer, Dennis Rodman, Black Prairie

Vanessa Hudgens, Chris O'Dowd, Gary Clark Jr.

Dwayne Johnson, Chris Paul, Atlas Genius

Don Cheadle, Wynonna Judd

Gerard Butler, Keegan-Michael Key & Jordan Peele, Crystal Bowersox

Keith Urban, Paula Deen, Django Django

Kristin Chenoweth, Justin Willman, Josh Groban

Kim Kardashian, Willie Geist, Imagine Dragons

Matthew Perry, Kristen Schaal, Goo Goo Dollls

Blake Shelton, Jim Rome

Rosario Dawson, Max Greenfield, Gloriana

Eva Longoria, Terry Crews, Cavalia's Odysseo

Demetri Martin, Gin Wigmore

Julia Louis-Dreyfus, Anthony Jeselnik, Vintage Trouble

Rebel Wilson, Jackson Galaxy, Hanson

Charlie Sheen, Andy Enfield, Brad Paisley

LL Cool J, Andy Cohen, Tegan and Sara

Adam Levine, Cyndi Lauper, the Airborne Toxic Event

Diane Keaton, Trevor Moore, Jake Bugg

Carol Burnett, Stephen Amell, Plain White T's

Emily Blunt, Black Rebel Motorcycle Club

Gwyneth Paltrow, JB Smoove, Billy Ray Cyrus

Robert Downey Jr., Kenny Smith, Avril Lavigne

Ben Kingsley, Larry the Cable Guy, the Band Perry

Cher & Georgia Holt, Dov Davidoff, Florida Georgia Line

Kathy Griffin, Eli Roth, Cheap Trick

Matt Lauer, AWOLNATION

Chris Evans, Kevin Smith

Magic Johnson, Savannah Guthrie, Fall Out Boy

Zach Braff, Connie Sawyer, Patty Griffin

Ken Jeong, Emeli Sande

Shakira, Marc Maron, Tom Jones

Aaron Eckhart, Sherri Shepherd, 98 Degrees

Miranda Lambert, Ross Matthews, Pistol Annies

Wanda Sykes, Martha Stewart, Drop City Yacht Club

Usher, Nick Offerman, Pyramids

Adam Sandler, Phil Jackson, Family of the Year

Mitt Romney, the winner of "American Idol"

Vince Vaughn, Kenny Smith, Scotty McCreery

Owen Wilson, Wayde King & Brett Raymer, LeAnn Rimes

Danny McBride, Khloe Kardashian Odom, the Wanted

Henry Cavill, Jessica Buchanan & Erik Landemalm, She & Him

Russell Crowe, Andrea Bocelli

Kevin Bacon, Bad Company

Jimmy Connors, Matthew Morrison

Kevin Hart, Trace Adkins & Colbie Caillat

Carson Daly, Betty White, Timeflies

Armie Hammer, Dave Salmoni, Boxer Rebellion

Billy Crystal, Pitbull

Kathy Griffin, Billy Gardell, Grouplove

David Gregory, the winner of "The Voice"

Harvey Fierstein, the Mowgli's

Terry Bradshaw, Steve Byrne, Joseph Arthur

Steve Carell, Ken Ilgunas, Barenaked Ladies

Sandra Bullock, Bob Saget, Il Volo

Whitney Cummings, Alex Minsky, John Fogerty

David Spade, Joey King, Grace Potter

Wanda Sykes, India.Arie

Charlie Day, Jeffrey Dean Morgan, Lionel Richie

Dane Cook, Nev Schulman, Matt Nathanson

John Malkovich, Olivia Munn, Blackberry Smoke

Helen Mirren, Ben Schwartz, the Olms

Bill Hader, Eliot Spitzer, Passenger

Savannah Guthrie, Anthony Jeselnik, Johnnyswim

Zachary Levi, Danica Patrick, Talib Kweli featuring Nelly & Abby Dobson

Jane Lynch, Serena Ryder

Anthony Hopkins, Amy Schumer, Robert Randolph and the Family Band

Howie Mandel, Marisa Miller, Sara Bareilles

Gillian Anderson, Jim Rash & Nat Faxon, Kenny Chesney

Aaron Paul, Selena Gomez

Ashton Kutcher, Jayma Mays, Hiatus Kaiyote

Cate Blanchett, Michael B. Jordan, Court Yard Hounds

Katy Perry, Cris Collinsworth, Kacey Musgraves

Kristen Bell, Phillip Phillips

Kristin Chenoweth, Josh Gad

Kate Hudson, Bob Costas, Kopecky Family Band

Casey Affleck, Allison Janney

Meredith Vieira, Jim Norton, Charlie Worsham

Bryan Cranston, Karolina Kurkova, Amos Lee

President Barack Obama

Matt Damon, Anna Faris, Parachute

Robin Williams, Mark Cuban, Gavin DeGraw

Jason Sudeikis, Jim Stacy

Jeff Daniels, Sherri Shepherd, Quinn Sullivan

Josh Duhamel, J.B. Smoove, Macklemore & Ryan Lewis

Matt LeBlanc, Sky Blu

Julie Scardina, Rod Stewart

Sen. John McCain, Diablo Cody, Booker T. Jones with Mayer Hawthorne

Bill Maher, Aisha Tyler

Christina Applegate, Rob Corddry, White Lies

Vince Vaughn, Olivia Munn, Vintage Trouble

Simon Cowell, Adam Carolla, American Authors

Martin Short, Meghan McCain, Backstreet Boys

Rose Byrne, Jennifer Nettles

Charlie Sheen, Jim Rome, Trombone Shorty

Hugh Jackman, Aisha Tyler, OneRepublic

Zooey Deschanel, Terry Crews, Buena Vista Social Club

Chris Hemsworth, Kristen Schaal, Sheryl Crow

Neil Patrick Harris, Demi Lovato, Five for Fighting

Christina Aguilera, Joy Behar, Valerie June

Tim Allen, Dwayne Wade, Fitz & the Tantrums

Jimmy Fallon, Lior Suchard, Billy Currington

Justin Timberlake, Paula Patton

Olivia Wilde, Adam Scott, Cher Lloyd

Dana Carvey, Cee-Lo Green, Goodie Mob

Julia Louis-Dreyfus, Ron Paul, Little Big Town

Sandra Bullock, Gregory Porter

Magic Johnson, Marjorie Johnson, Gary Clark Jr.

Joseph Gordon-Levitt, Jay Mohr, Mika featuring Ariana Grande

Kathy Griffin, Newt Gingrich, Demi Lovato

Julianne Moore, Billy Gardell, Stone Temple Pilots with Chester Bennington

Terry Bradshaw, Nelly

Drew Barrymore, D.L. Hughley, the Avett Brothers

Billy Crystal, Nicole "Snooki" Polizzi, Jenni "JWoww" Farley, Toni Braxton, Kenny "Babyface" Edmonds

Whitney Cummings, Ann Romney, Lissie

Lauren Graham, Chris Matthews, Tom Odell

Rosie Perez, Tenacious D

Michael Douglas, Larry the Cable Guy, Thomas Rhett

Kristin Chenoweth, Ross Matthews, Joan Jett and the Blackhearts

Harrison Ford, Piers Morgan, Daughtry

Emma Roberts, Dave Salmoni, Diane Birch

Wanda Sykes, Richard Engel, Scotty McCreery

Adam Levine, Ali Wentworth, Steve Nieve with Elvis Costello

Savannah Guthrie, Mark Cuban, Kodaline

Kim Kardashian, Abigail Breslin, Two Door Cinema Club

Matthew McConaughey, Eli Roth, the Fray

Andy Cohen, Empire of the Sun

Anthony Hopkins, Sting

Liam Hemsworth, JB Smoove, the Rides featuring Stephen Stills & Kenny Wayne Shepherd

Ellen DeGeneres, Shaun White, Tired Pony

Andy Sandberg, the Neighbourhood

Mariska Hargitay, Sen. Ted Cruz

Casey Affleck, Kelly Clarkson, Lyle Lovett

Matt Lauer, Carrot Top, Cults

Bill Cosby, Chris Pratt, Gary Allan

Craig Ferguson, JRand featuring Flo Rida

Bill O'Reilly, Guy Fieri, Lee Brice

Whoopi Goldberg, TOTEM from Cirque de Soleil

George W. Bush, Ty Barnett, Ben Harper with Charlie Musselwhite

Blake Shelton, Kathie Lee Gifford, Hoda Kotb, Imelda May

Kristen Bell, David Gregory, Julian Lennon

Jim Parsons, John Downer

Bette Midler, Michael Buble

Quentin Tarantino, Jim Stacy, Luke Bryan

Garth Brooks, Jim Edds

Christina Aguilera, Jay Mohr

Simon Cowell, Megyn Kelly, MS MR

Kirstie Alley, Ernie Brown Jr., Switchfoot

Tyler Perry, Ken Jeong, the Head and the Heart

Kevin Hart, Brooklyn Decker, Chris Young

Carson Daly, Billy Ray Cyrus

Meredith Vieira, Jake Bugg

Olivia Wilde, Julie Scardina, Johnny Mathis

Christina Applegate, Kevin Nealon, the winner of "The Voice"

Sylvestor Stallone, Judd Apatow, Libera

Michael Strahan, Leona Lewis

Louis C.K., Sen. John McCain, Meghan McCain, Plain White T's

Mark Wahlberg, Jeff Foxworthy, Salaam Remi featuring Akon

Steve Carell, Kathryn Hahn, Jake Clemons

Leslie Mann, David Koechner

Kevin Bacon, Sherri Shepherd, Mary Lambert

Jennifer Lopez, Aaron Eckhart, Dorian Holley

Matt Damon, Larry the Cable Guy, Chris Isaak

Vanessa Hudgens, Foreigner

Mark Harmon, Kristin Chenoweth

Chelsea Handler, Bob Costas, Sharon Jones & the Dap-Kings

Coming Soon...

Adam Sandler, Ali Wentworth, Sheryl Crow

Charlie Sheen, Joy Behar, Neon Trees

Rep. John Boehner, Matt LeBlanc, Dorian Holley

Terry Bradshaw, Darius Rucker

Dana Carvey, Earvin "Magic" Johnson, A Great Big World

Wanda Sykes, Thomas Haden Church, Dwight Yoakam

Bill Maher, Whitney Cummings, Jennifer Nettles

Miley Cyrus, Howie Mandel, Sarah McLachlan

Tim Allen, Dave Salmoni, Sara Bareilles

Jimmy Fallon, Betty White, Bonnie Raitt

Matthew McConaughey, Charles Barkley, Lyle Lovett

Sandra Bullock, Blake Shelton, Vintage Trouble

Billy Crystal, Garth Brooks