Ron Howard, Nicole "Snooki" Polizzi, Sick Puppies
Queen Latifah, Gustavo Dudamel, Jazmine Sullivan
Jamie Foxx, Leighton Meester
Hilary Swank, Jesse Eisenberg, Los Lobos
Jim Parsons, Hailee Steinfeld, Lukas Nelson
Randy Jackson, Jennifer Lopez, Ryan Seacrest, Steven Tyler, Dan Ahdoot, Diane Birch
Bill Maher, Cam Newton, the Duke Spirit
Seth Rogen, Brady Barr, Bettye Lavette
Cameron Diaz, Eric Stonestreet, the Civil Wars
Michael Douglas, Julie Scardina, Randy Rogers Band
Gordan Ramsay, Kathleen Madigan, Maroon 5
Ashton Kutcher, Aubrey Plaza, Neon Trees
Amy Poehler, Mike "The Situation" Sorrentino, Grace Potter & the Nocturnals
Ben Affleck, the Decemberists
Kathie Lee Gifford & Hoda Kotb, Armie Hammer, Hayes Carll
Dana Carvey, Maggie Q, Lizz Wright
Jason Statham, Melissa McCarthy, White Lies
Annette Bening, Frank Caliendo, Amos Lee
Kathy Bates, Brad Womack, Billy Currington
Justin Bieber, Jay Mohr, the Band Perry
Adam Sandler, Larry the Cable Guy, Esperanza Spalding
Helena Bonham Carter, Timothy Olyphant, One eskimO
Jesse Eisenberg, Jennifer Lawrence, Ryan Bingham
Jeff Bridges, Dianna Agron, Bobby Long
Hugh Laurie, Hailee Steinfeld, Finesse Mitchell
Mark Wahlberg, Lachlan Patterson, James Blunt
Javier Bardem, Paula Abdul, Merle Haggard
Matt LeBlanc, Clay Matthews, Ricky Martin
Rob Lowe, Amber Riley, Nicki Minaj
Kathy Griffin, Gayle King, the Black Keys
Lady Gaga, Sofia Vergara, John Legend
Liam Neeson, Dave Salmoni, Gretchen Wilson
Charles Barkley, Jenni "JWoww" Farley, Red
Jenna Fischer, Abigail Breslin, Miguel
Mark Harmon, Dwight Howard, 30 Seconds to Mars
The Tonight Show with Jay Leno Season 19 Episode 36
Owen Wilson, Rachel Maddow, Anberlin
Randy Jackson, Nick Swardson, Travie McCoy
Meredith Vieira, DJ Pauly D, Hanson
Emily Blunt, Jackson Murphy, Chris Medina
Christina Appelgate, John Fulton, Michael Franti
Matt Damon, Betty White, Cake
Simon Cowell, Jeff Gordon, Travis Barker
Jerry Seinfeld, Bailee Madison, Darlene Love
Aaron Eckhart, Christie Brinkley, Thompson Square
Jane Lynch, Chris Matthews, Avril Lavigne
Wanda Sykes, Simon Pegg, Juanes
Matthew McConaughey, Rizwan Manji, Michael Kosta
Rainn Wilson, "Epic Meal Time" with Harley Morenstein & Sterling Toth, Serj Tankian
Robert Pattinson, Whitney Cummings, Alice Cooper
Zachary Levi, Lisa Lampanelli, Raphael Saadiq
Julie Scardina, Rebecca Black, Duran Duran
Carol Burnett, Jason Ritter, Keith Urban
Kirstie Alley, Jon "Bones" Jones, Peter, Bjorn & John
Jennifer Hudson, William H. Macy
Russell Brand, Lorraine Nicholson, Los Lonely Boys
Howie Mandel, Zachary Gordon, Dierks Bentley
Helen Hunt, Sammy Hagar, Good Charlotte
Kourtney & Kim Kardashian, Fareed Zakaria, Mary Mary
Vin Diesel, Ashley Tisdale, Scissor Sisters
Tracy Morgan, Neve Campbell, Augustana
Dwayne Johnson, Bethany Hamilton, Fitz & the Tantrums
Matthew Morrison, Carrie Underwood
Emma Roberts, Gary Busey, Jeff Beck with Imelda May
David Arquette, Ben Bailey, Far East Movement
Jamie Foxx, k.d. lang
Kristen Bell, Austin "Chumlee" Russell
Jessie J
Tyler Perry, Kendra Wilkinson, Bright Eyes
John Travolta, Eliza Doolittle
Christina Aguilera, Paul Reiser, Alison Krauss & Union Station featuring Jerry Douglas
Lindsay Lohan, Jillian Michaels, the Airborne Toxic Event
Rene Russo, Kevin Hart, Buddy Guy
Chelsea Handler, Judd Apatow, OK Go
Rob Lowe, Moby
Paul Walker, Donny & Marie Osmond
Penelope Cruz, Ricky Martin
Kate Hudson, Chris Hemsworth, Sergio Mendes with Siedah Garrett
Wanda Sykes, Ralph Macchio, Priscilla Ahn
Steven Tyler, Aubrey Plaza, the Civil Wars
Jennifer Lopez, Chris Colfer, BC Jean
Julie Scardina, Ginnifer Goodwin, Def Leppard
Dick Van Dyke, Khloe Kardashian & Lamar Odom, Steve Earle
Norm Macdonald
Jodie Foster, Ken Jeong, Rodrigo y Gabriela
Eva Mendes, storm chaser Reed Timmer, Tedeschi Trucks Band
Ryan Seacrest, Jordana Brewster, TV on the Radio
Ed Helms, Chelsea Kane, Iron & Wine
Jack Black, Mike Huckabee, Parachute
Kirstie Alley, Erik Rivera, Il Volo
Dustin Hoffman, Meghan McCain, the Script
Meredith Vieira, Demetri Martin, Ben Harper
Chaz Bono, Brady Barr, Foster the People
Piers Morgan, Rico Rodriguez, Scott Weiland
Paris Hilton, Dhani Jones, INXS with Pat Monahan
Katie Couric, Cee-Lo Green
Kevin Bacon, Bethenny Frankel, OneRepublic
Jada Pinkett Smith, Elle Fanning, Lenka
Jim Carrey, Selena Gomez, Tinie Tempah
Bill Cosby, Kris & Bruce Jenner, Neon Trees
Adam Levine, Ziggy Marley
Kim Kardashian, Lior Suchard, Randy Travis with Josh Turner
Blake Lively, Blake Shelton, Scotty McCreery
Larry David, Pitbull with Ne-Yo
Josh Duhamel, Jill Scott
Bono & the Edge, Larry the Cable Guy, a performance from
Rosario Dawson, Marc Anthony, Jackie Evancho
Louis C.K., Richard Engel, Raphael Saadiq
Justin Timberlake, Kevin Hart, the Antlers
David Spade, Tom Papa, Plain White T's
Larry David, Ashley Hebert, Pitbull featuring Ne-Yo
Kirstie Alley, Comic Erik Rivera
Lisa Kudrow, Billy Gardell, Natasha Bedingfield
Julie Scardina; Mary-Louise Parker; Billy Ray Cyrus
Kevin James, The Voice winner Javier Colon
Kathie Lee Gifford, Hoda Kotb, Ashton Shepherd
Howie Mandel, David Feherty, Joss Stone
Seth Meyers, Marjorie Johnson, Barry Manilow
Craig Ferguson, Rose Byrne
Don Rickles, Bristol Palin, Colbie Caillat
Bryan Cranston, Nancy Grace, Shaggy
Neil Patrick Harris, Buddy Valastro, Imelda May
Jenna Fischer, Ben Bailey, 3 Doors Down
Daniel Craig, Gavin DeGraw
Emma Stone, Adam Carolla, Rickey Minor, Grace Potter, Charles Bradley, Sharon Jones
Dolly Parton, Ben Bailey
Jessica Alba, Sue Johanson, Gomez
Shaun White, Olivia Wilde, Train
Chris Tucker, Skipper Bivins & Trent Jackson, Vanessa Carlton
Matt LeBlanc, Freida Pinto, Stevie Nicks
Gillian Anderson, Aziz Ansari, Kelly Rowland
Ryan Reynolds, Sheryl Crow, Matt Nathanson
Katie Holmes, Novak Djokovic, Mat Kearney
Jeremy Piven, Kelly Osbourne
Roseanne Barr, Jason Momoa, Lykke Li
Dennis Miller, Dennis Rodman, Rye Rye featuring Robyn
Gordon Ramsay, Bryce Dallas Howard, Panic! at the Disco
Jesse Eisenberg, Mike ''The Situation'' Sorrentino
Joel McHale, Viola Davis, Ximena Sarinana
Sam Worthington, Bailee Madison, The Game
Jane Fonda, Elizabeth Banks, Mana
Julie Scardina, David Koechner, Cake
Jeff Bridges, Nicole
Allison Janney, Jay Mohr, OK Go
Heidi Klum, Kevin Smith, Fitz and the Tantrums
Dick Cheney, Carrot Top, Andy Grammer
Wanda Sykes, Nick Swardson, Roger Daltrey
Kristin Chenoweth, Chris Colfer
Will Arnett, Tinie Tempah
Bill Maher, Octavia Spencer, Alice Cooper
Christina Applegate, Pauly D, Glen Campbell
Ellen DeGeneres, Bob Harper, Cobra Starship
Jane Lynch, Demetri Martin, Needtobreathe
Kevin Hart, Charlie Sheen, LMFAO
Jason Statham, Michele Bachmann, Lady Antebellum
Simon Cowell, Natasha Leggero, Selena Gomez
Gerard Butler, Whitney Cummings, Kelly Clarkson
Amy Poehler, Joseph Gordon-Levitt, the Kooks
Jamie Foxx, Michelle Monaghan, Bush
Hugh Jackman, Maya Rudolph, Tony Bennett
Ryan Gosling, Pauley Perrette, Arctic Monkeys
Lauren Graham, Seth MacFarlane
Ed Helms, Lisa Hannigan
Albert Brooks, Deena Nicole Coretese, TV on the Radio
Hugh Laurie, Chaz Bono, the Airborne Toxic Event
Evangeline Lilly, Magic Johnson, Jo Koy
Kim Kardashian, Kris Humphries, Kenny Wormald, LeAnn Rimes
Tim Allen, Theresa Caputo, Scotty McCreery
Jack Black, Steve Martin, Owen Wilson, Aubrey Plaza, Blondie
David Arquette, Darrell & Brandon Sheets, Puddle of Mudd
Aaron Eckhart, Julianne Hough, Amos Lee
Julie Bowen, Dave Salmoni, Imelda May
Zooey Deschanel, J.R. Martinez, Fountains of Wayne
Zachary Levi, Gloria Estefan
Terry Bradshaw, Rowan Atkinson, Game
Jonah Hill, Paula Deen, Chris Isaak
President Barack Obama
Amanda Seyfried, John Cho & Kal Penn, Patrick Stump
Chelsea Handler, Chris D'Elia, the Original 7ven
Adam Sandler, Drew Manning, Awolnation
Justin Bieber, David Freese, Lloyd
Eddie Murphy, Robyn
Taylor Lautner, Martha Stewart, Daughtry
Kristen Stewart, Dave Attell, Joe Jonas
Miss Piggy, Mickey Rourke, Mute Math
Ellen Barkin, Henry Cavill, Cirque du Soleil
Jason Segel, Kris Jenner, Lyle Lovett
Kelsey Grammer, Andrea Bocelli
Whitney Cummings, Chris Matthews, Il Divo
Kermit the Frog, Ricki Lake
Amy Adams, Rocket City Rednecks, Miranda Lambert
Howie Mandel, Nicole "Snooki" Polizzi, Patrick Stump
Robin Williams, Vince Gill
Jimmy Fallon, Drew Brees, Gym Class Heroes
Jim Parsons, Meghan McCain, Tom Morello with Ben Harper
Dennis Miller, David & Sean La Vau, Javier Colon
Julie Scardina, Dane Cook, Hot Chelle Rae
Chelsea Handler, Dwight Howard, Gloriana
Damon Wayans Jr., She & Him
Kathy Bates, Jay Mohr, Switchfoot
Bill Cosby, Raini Rodriguez, Iron & Wine
Melissa McCarthy, Gov. Rick Perry, T-Pain
Hilary Swank, Mike 'The Situation' Sorrentino, Dia Frampton'
Robert Downey Jr., Abigail Breslin, Alison Krauss & Union Station
Katherine Heigl, J.B. Smoove, Taio Cruz
Lea Michele, Adam Carolla, Neil Diamond
Katie Couric, Chris D'Elia, Blake Shelton
Bill O'Reilly, Jackie Evancho
Charlize Theron, Kevin Hart, Foster the People
Dana Carvey, Jason Reitman, Lenny Kravitz
Louis C.K., Common
Al Michaels & Cris Collinsworth, Elle Fanning, Robin Thicke
Rep. Ron Paul, Chris Cornell
Sandra Bullock, Diablo Cody, Pink Martini
Charles Barkley, Berenice Bejo, Amber Riley
Thomas Haden Church,
Jonah Hill, Chris Paul, Il Volo
Terry Bradshaw, Bailee Madison, Chris Isaak
