Lena Dunham, Hugh Dancy, Foster the People

Will Smith, U2

Jerry Seinfeld, Kristen Wiig, Lady Gaga

Bradley Cooper, Tim McGraw

Michelle Obama, Will Ferrell, Arcade Fire

Justin Timberlake

Reese Witherspoon, Fred Armisen, Rick Ross

Paul Rudd, Shaquille O'Neal

Drew Barrymore, Adam Sandler, Dierks Bentley

Denzel Washington, Shaun White, Sara Bareilles

Cameron Diaz, Ralph Fiennes, Mario Batali

Tina Fey, Randy Newman

Chelsea Handler, Lea Michele

Annette Bening, Norman Reedus, The Avett Brothers

Liam Neeson, Lindsay Lohan, Billy Eichner, Bad Things

Stephen Colbert, Keri Russell, Broken Bells

Kristen Bell, Steve Harvey, Demi Lovato

Tyler Perry, Billy Eichner, Juanes

Shailene Woodley, Artie Lange, Beck

Julianna Margulies, Patton Oswalt, Nate Bargatze

James Franco, Andy Cohen, Jake Bugg

James Spader, Kermit the Frog, Black 47

Greg Kinnear, Emilia Clarke, Natasha Leggero

Billy Joel, Chelsea Clinton

Kevin Bacon, Jeff Musial, Ty Dolla $ign, Ann Wilson

Arnold Schwarzenegger, Carson Daly, Vampire Weekend

Jude Law, Shakira

Bill Cosby, Joby Ogwyn, Nathan East

Russell Crowe, Joan Rivers, The National

January Jones, Josh Holloway, Passenger

Chris Evans, Ricky Jay

Samuel L. Jackson, Minnie Driver, Pitbull

Denis Leary, Cat Deeley, Nickel Creek

Daniel Radcliffe, Cedric the Entertainer, Travie McCoy

Bill O'Reilly, Anthony Mackie, Sky Ferreira

Colin Firth, Chloë Grace Moretz, Nas featuring Q-Tip, John Oates

Anne Hathaway, Marlon Wayans, Yusuf Islam

Jennifer Garner, Dave Grohl, Krist Novoselic, Stevie Nicks

Kevin Costner, Danica McKellar, Alan Cumming and the Broadway cast of ‘Cabaret’, Philip Bailey

Nicolas Cage, Emily VanCamp, KISS

Brian Williams, Christina Hendricks, Ilan Hall

David Duchovny, John Oliver, Rita Ora

Cameron Diaz, Jim Gaffigan, Future featuring Pusha T

Dr. Phil McGraw, James Van Der Beek, Courtney Barnett, Steven Tyler & Joe Perry

Jamie Foxx, Alan Cumming, Alicia Keys & Kendrick Lamar

Emma Stone, Robinson Cano, Keith Urban

Diane Keaton, Dane DeHaan, David Byrne, Daley

David Spade, Sophia Bush, The Both

Andrew Garfield, Mary Lynn Rajskub, Chvrches

Kevin Spacey, Lewis Black

Bryan Cranston, Brie Larson, Kevin Delaney

Seth Rogen, Matt Bomer, Coldplay

Zac Efron, Guy Fieri, Sarah McLachlan

Michael Fassbender, Zoe Saldana

James McAvoy, Amy Schumer, tUnE-yArDs

Louis CK, Jack White, Neil Young

Dolly Parton, Taylor Kitsch

Maya Rudolph, Robert Duvall, Lily Allen

Jennifer Lawrence, Craig Robinson, Broadway cast of 'A Gentleman's Guide To Love and Murder'

Drew Barrymore, Giovanni Ribisi, Elbow

Liam Neeson, Terry Crews, Conor Oberst

Charlize Theron, Josh Hartnett

Hugh Jackman, Jimmy Page, Barry Gibb, winner of The Voice

Amanda Seyfried, Will Ferrell

Seth MacFarlane, Thandie Newton, Rascal Flatts

Ricky Gervais, Ansel Elgort, Miranda Lambert

Jonah Hill, Rahm Emanuel, Soundgarden

Tom Cruise, Kendall and Kylie Jenner, Chrissie Hynde

Mike Myers, Neil deGrasse Tyson, Damon Albarn

Channing Tatum, Joshua Topolsky, Julian McCullough

Clint Eastwood, Jack White

Jim Carrey, Jeff Daniels, Taylor Schilling, Ed Sheeran

Barbara Walters, Mama June & Honey Boo Boo, Iliza Shlesinger

Chris Rock, Kacey Musgraves

Dave Chappelle, Body Count

Jennifer Lopez, Keenen Ivory Wayans

Kevin Hart, Jimmy Buffett

Rosario Dawson, Jeff Musial, Fun.

George Lopez, Pitbull

Kiefer Sutherland, Nicole Richie; Crosby, Stills & Nash

Halle Berry, Chris Colfer, Florida Georgia Line

Kelly Ripa, Jason Clarke, Sylvan Esso

Dana Carvey, Hailee Steinfeld, Magic!

Liev Schrieber, Rob Reiner, Gabriel Iglesias

Michael Strahan, Diane Kruger, Phish

Cameron Diaz, Josh Gad, Bleachers

Whoopi Goldberg, Stephen Moyer, Puss N Boots

John Lithgow, Miranda Kerr, Jason Mraz

Dan Aykroyd

Kate Hudson, Ellar Coltrane, Nico & Vinz

Dwayne Johnson, Mel B, Chronixx

Robin Wright, Josh Charles, Weezer

Morgan Freeman, Kesha, Tweedy

Jon Hamm, Brit Marling, Martha Stewart

James Franco, Chadwick Boseman, Jenny Lewis

Vin Diesel, Aubrey Plaza, Will.i.am

Heidi Klum, Mike Birbiglia, Temples

Julia Roberts, Andy Cohen, Ron Funches

Martin Lawrence, Jenny Slate, Aloe Blacc

Helen Mirren, James Cameron, Spoon

Clive Owen, Nina Dobrev, The Head & the Heart

Megan Fox, Nick Cannon, Wiz Khalifa

Will Arnett, T.I.

Jeff Bridges, Ali Larter, Andy Woodhull

Katie Holmes, Chris Hardwick, OneRepublic

Mickey Rourke, Rob Riggle, Kings of Leon

Taylor Swift, Andrew Rannells, Ryan Adams

Sylvester Stallone, Eve Hewson, winner of 'Last Comic Standing'

Jason Statham, Demi Lovato, David Chang

Bill Cosby, Tiger Woods, Rory McIlroy, Royksopp & Robyn

Pierce Brosnan, Tavi Gevinson, The Madden Brothers

Jared Leto, Amy Brenneman, Thirty Seconds To Mars, Tom Bailey

Josh Brolin, Artie Lange, Giada De Laurentiis

Ethan Hawke, Amy Sedaris, The Secret Sisters

Adam Levine, Meredith Vieira, Maroon 5

Blake Shelton, Tim Heidecker & Eric Wareheim

Larry David, Gisele Bündchen, Jeezy ft. Future

Claire Danes, Mo'ne Davis, Fences ft. Macklemore

Jason Segel, Steve Harvey, Alicia Keys

Keith Richards, Debra Messing

Hugh Jackman, Nick Offerman, Luke Bryan

Jessica Chastain, Jeffrey Tambor, Chris Brown

Glenn Close, Justin Long

Barbra Streisand

Julianna Margulies, Jerry Lewis, Public Enemy

Liam Neeson, Terry Gilliam

Billy Crystal, Rose Byrne, Chef Nobu Matsuhisa

James Spader

Sofia Vergara, Megan Boone, The Black Keys

Kerry Washington, Carson Daly, Julian Casablancas + The Voidz

Andy Samberg, Kevin Durant, Kenny Chesney

Chris Pratt, Rosamund Pike

Matthew Broderick & Nathan Lane, Robert Plant

Ben Affleck, Kate Walsh

Tyler Perry, Miles Teller, Lucinda Williams

Jennifer Garner, John Mulaney, Lady Antebellum

Derek Jeter, James Marsden, 5 Seconds of Summer

Emma Thompson, Dane Cook

Jeremy Renner, Carol Burnett, Mario Batali, Joe Perry

Kristen Stewart, Artie Lange, Jason Aldean, Nas

Robert Downey Jr., Ira Glass, Big & Rich

Steve Carell, Julianne Hough, Philip Selway featuring the Dap-Kings

Jada Pinkett Smith, Nick Kroll, Bobby Shmurda

Zach Galifianakis, Casey Wilson

Emma Stone, Logan Lerman, Sam Smith

Shailene Woodley, Michael Shannon, Eric Church, Lenny Pickett

Sting, Jason Schwartzman, a performance from The Last Ship

Bradley Cooper, Neil Diamond

Ewan McGregor, Charles Barkley, Wilco, Herbie Hancock

Daniel Radcliffe, Mike Tyson, Sturgill Simpson

Jake Gyllenhaal, Paul Reubens, She & Him, George Clinton

Gordon Ramsay, Little Big Town

Kevin Spacey, Olivia Munn, Kenny & Keith Lucas

Anne Hathaway, Gael Garcia Bernal, Stevie Nicks

Savannah Guthrie, Matt Lauer, Felicity Jones, FKA Twigs

Bette Midler, Jim Gaffigan

Matthew McConaughey, Beth Behrs, Tove Lo

Jay Leno, Lucy Liu, Kevin Delaney, Dave Davies

Jeff Daniels, Mackenzie Foy, the New Basement Tapes

Drew Barrymore, the Farrelly Brothers, Johnny Marr

Channing Tatum, Eddie Redmayne, Logic

Josh Hutcherson, Tracey Ullman, Echosmith

Liam Hemsworth, Katherine Heigl, Sebastian Maniscalco, Kool & the Gang

Benedict Cumberbatch, Allison Williams, U2

Russell Brand, Brooke Shields, U2

Jon Stewart, Stephen Merchant, U2

Mark Ruffalo, Anthony Kiedis, U2

Julianne Moore, Michael Cera, U2

Tim Allen, will.i.am, Dej Loaf

Bill O'Reilly, Lorde

Christopher Walken, Nick Jonas, Iggy Azalea

Garth Brooks, Rashida Jones

Episode 173

Episode 175

Episode 176

Episode 177

Episode 178

Episode 179

Episode 180

Episode 181

Episode 182

Episode 183

Episode 184

Episode 185

Episode 186

Episode 187

Episode 188

Episode 189

Episode 190

Episode 191

Episode 192