Episode 1: Will Arnett, Lisa Lampanelli, Guided by Voices

Episode 2: Brian Williams, WU LYF

Playing

Episode 3: Tina Fey, Jeremy Irvine, Barr Brothers

Episode 4: Kristen Bell, Dan Naturman, Blind Pilot

Episode 5: Mark Wahlberg, Heather Morris, Snow Patrol

Episode 6: Kate Beckinsale, Marv Albert, The Little Willies

Episode 7: Dolly Parton, Alan Zweibel

Episode 8: Sen. John McCain, Johnny Winter

Episode 9: Viggo Mortensen, Dennis Regan, Tony Bennett

Episode 10: Simon Baker, Elizabeth Banks, Seal

Episode 11: Ricky Gervais, Jessica Chastain, Kathleen Edwards

Episode 12: Marg Helgenberger, Michael Fassbender, Ellie Goulding

Episode 13: Kathy Griffin, Simon Helberg, Joseph Arthur

Episode 14: Dana Carvey, Jon Fisch, Los Campesinos!

Episode 15: Jennifer Lopez, Rob Schneider, James McCartney

Episode 16: Bill Murray, Girls' Generation

Episode 17: Howard Stern, The Airborne Toxic Event

Episode 18: Woody Harrelson, Stephen Merchant, Lana Del Rey

Episode 19: Michelle Williams, Jake Johannsen, Ziggy Marley

Episode 20: Eli Manning, Sarah Michelle Gellar, Die Antwoord

Episode 21: Denzel Washington, The Fray

Episode 22: Ryan Reynolds, Ellie Kemper, Dierks Bentley

Episode 23: Nicolas Cage, Michelle Dockery, The Kills

Episode 24: David Spade, Betty Wright

Episode 25: Reese Witherspoon, Michael Weatherly, Top Ten by Sports Illustrated Swimsuit models, Kasabian

Episode 26: Viola Davis, the 2012 Sports Illustrated Swimsuit cover model, Mark Ronson, Erykah Badu, The Dap-Kings, Zigaboo Modeliste

Episode 27: Jon Stewart, American Bagging Champion Stephanie Teteak, Yelawolf with Kid Rock

Episode 28: Joan Rivers, Andrew Lincoln, Jason Mraz

Episode 29: Kristen Wiig, Mike Birbiglia, Butch Walker and the Black Widows

Episode 30: Jack Hanna, Jesse Tyler Ferguson

Episode 31: Alec Baldwin, Eric Hutchinson

Episode 32: Paul Rudd, John Witherspoon, Heartless Bastards

Episode 33: Kristin Chenoweth, Joe Scarborough, K'naan featuring Nelly Furtado

Episode 34: Matthew Broderick, Nick Griffin, We Are Augustines

Episode 35: Ed Helms, Dan Patrick, Lyle Lovett

Episode 36: Nathan Lane, Pauley Perrette, Estelle

Episode 37: Neil Patrick Harris, Taylor Kitsch, Robert Glasper Experiment featuring Lupe Fiasco & Bilal

Episode 38: Jon Hamm, Ted Alexandro, White Rabbits

Episode 39: Will Ferrell, Jon Bernthal

Episode 40: Amanda Peet, Nick Offerman, Top Ten by Cee-Lo Green, The Chieftains with the Low Anthem

Episode 41: Martin Short, The Ting Tings

Episode 42: Michelle Obama, Esperanza Spalding

Episode 43: Jennifer Lawrence, Gail Collins, The Shins

Episode 44: Debra Messing, Josh Hutcherson, Oberhofer

Episode 45: Rachel Maddow, Timothy Olyphant, Train

Episode 46: Jason Sudeikis, Lionel Richie, Jason Aldean

Episode 47: Chris Elliott, Mohamed Nasheed, Justin Townes Earle

Episode 48: Tracy Morgan, Jim Rome, The Broadway musical 'Once'

Episode 49: Megan Mullally, Joe Wong, Band of Skulls

Episode 50: Keith Olbermann, Allison Williams, Lukas Nelson & Promise of the Real

Episode 51: Kiefer Sutherland, Eugene Levy, The Punch Brothers

Episode 52: Ricky Gervais, Cobie Smulders, Tennis

Episode 53: Sean Hayes, Shooter Jennings

Episode 54: Magic Johnson, Larry Bird, Jim Gaffigan, Kaiser Chiefs

Episode 55: Billy Crystal, Alabama Shakes

Episode 56: Julia Louis-Dreyfus, Keith Alberstadt, Bonnie Raitt

Episode 57: Jason Segel, Zach Wahls, Fun

Episode 58: Amy Poehler, Wendy Williams, Trampled by Turtles

Episode 59: Rob Lowe, Gov. Brian Schweitzer, The War on Drugs

Episode 60: Robin Williams, Andrew Luck

Episode 61: Madden NFL 13 Cover Calvin Johnson, Chris Hemsworth, Darrell Hammond, Miike Snow

Episode 62: Don Rickles, Carrie Underwood

Episode 63: Seth Meyers, Krysten Ritter, Father John Misty

Episode 64: Stupid Pet Tricks, Johnny Galecki, Norah Jones

Episode 65: Stephen Colbert, Chloe Grace Moretz, The cast of 'Nice Work If You Can Get It'

Episode 66: Anderson Cooper, Yves Rossy, Electric Guest

Episode 67: Dr. Phil McGraw, Beth Behrs, Spiritualized

Episode 68: Jim Parsons, Mika Brzezinski, Macy Gray

Episode 69: Eva Longoria, Tom Dreesen, Florence and The Machine

Episode 70: Kid Scientists, Elizabeth Banks, Edward Sharpe & The Magnetic Zeros

Episode 71: Jon Cryer, Tommy Johnagin, M. Ward

Episode 72: Kelly Ripa, Adam Scott, Tenacious D

Episode 73: Brian Williams, El-P

Episode 74: Betty White, Moses Maddox, Best Coast

Episode 75: Conan O'Brien, Regina Spektor, John Mayer

Episode 76: Sacha Baron Cohen, Julie Chen, Beach House

Episode 77: Lea Michele, Barry Sonnenfeld, Shaolin Warriors of Ringling Bros

Episode 78: Will Smith, Gossip

Episode 79: Piedmont Bird Callers, Bill O'Reilly, Pitbull

Episode 80: Joan Rivers, Dario Franchitti, Silversun Pickups

Episode 81: Neil Patrick Harris, Noomi Rapace, Alan Jackson

Episode 82: Jane Fonda, Mayor of London Boris Johnson, Jimmy Cliff

Episode 83: Bill Murray, The Temper Trap

Episode 84: Mark Wahlberg, Sebastian Vettel, Black Box Revelation

Episode 85: Jack Hanna, Patti Smith

Episode 86: Adam Sandler, Jerry Douglas

Episode 87: Regis Philbin, Lenny Marcus, Elizabeth Cook

Episode 88: Denis Leary, Olivia Wilde, The Pierces

Episode 89: Jeff Daniels, Benjamin Walker, Walk the Moon

Episode 90: Alec Baldwin, Michael Kiwanuka

Episode 91: Justin Bieber, Michael Ian Black

Episode 92: Emma Stone, Jimmie Walker, Diamond Rugs

Episode 93: LeBron James, Andrew Garfield, Maroon 5

Episode 94: Channing Tatum, Scott Pelley, The Gaslight Anthem

Episode 95: Blake Lively, Drew Brees

Episode 96: Ray Romano, Tom Waits, Top Ten by American League All-Stars

Episode 97: Queen Latifah, Fred Armisen, Cory Chisel and the Wandering Sons

Episode 98: Bryan Cranston, R.A. Dickey, Zac Brown Band

Episode 99: Anne Hathaway, Moody McCarthy, Loudon Wainwright III

Episode 100: Morgan Freeman, Gallagher, Nas

Episode 101: Roseanne Barr, Aubrey Plaza, Jeff the Brotherhood

Episode 102: Kyra Sedgwick, Mike Golic and Greenberg, Red Wanting Blue

Episode 103: Woody Harrelson, Todd Barry, Grafitti6

Episode 104: Will Ferrell, Rufus Wainwright

Episode 105: Zach Galifianakis, Former U.S. Army Sgt. Valerie Brown, Allen Stone

Episode 106: Jonah Hill, Dr. Leonard Girardi, Milo Greene

Episode 107: Joel McHale, Andrew Norelli, Will.I.Am

Episode 108: Andy Samberg, Ashton Eaton, Glen Hansard

Episode 109: Jennifer Garner, The U.S. Women's Olympic Gymnastics team, Rodriguez

Episode 110: Tom Brokaw, Dana Vollmer, Beth Orton

Episode 111: Tracy Morgan, Erik Kynard, Ben Howard

Episode 112: Kelsey Grammer, Olivia Munn, Train

Episode 113: Bill Hader, Mary-Louise Parker, The Walkmen

Episode 114: Rachel Maddow, Serena Williams, Elle King

Episode 115: Kathy Griffin, Michael Somerville, Josh Turner

Episode 116: Jake Gyllenhaal, Sharon Osbourne, Neon Trees

Episode 117: Amy Adams, Paul Teutul Sr. & Paul Teutul Jr., Hacienda

Episode 118: Michelle Obama, The Chevin

Episode 119: Bruce Willis, Brian Regan, The Heavy

Episode 120: Claire Danes, Dwyane Wade, Bob Mould

Episode 121: Emma Watson, Julie Chen, Matchbox Twenty

Episode 122: Howard Stern, Jason Aldean

Episode 123: Joseph Gordon Levitt, Mindy Kaling, Of Gentlemen and Cowards

Episode 124: President Barack Obama

Episode 125: Michael Strahan, Arthur Meyer

Episode 126: Nathan Lane, Ryan Hunter-Reay, The Killers

Episode 127: Steve Martin, Gotye

Episode 128: Stupid Human Tricks, Kaley Cuoco, The Whigs

Episode 129: David Cameron, Jonny Lee Miller

Episode 130: Jimmy Fallon, Neil Young, Lupe Fiasco

Episode 131: Regis Philbin, Tom Dreesen, Dwight Yoakam

Episode 132: Stephen Colbert, Theresa Caputo, Martha Wash

Episode 133: Martin Short, Kat Dennings

Episode 134: Tina Fey, Rick Santorum, LP

Episode 135: Craig Ferguson, Anna Kendrick, The Raveonettes

Episode 136: Billy Crystal, The Wallflowers

Episode 137: Jack Hanna, Max Greenfield

Episode 138: Kevin James, Chris Elliott, Miguel

Episode 139: Salma Hayek Pinault, Nick Offerman, KISS

Episode 140: Lucy Liu; Rob Corddry; Daughter

Episode 141: John Goodman, Jeff Altman, Jamey Johnson with Alison Krauss

Episode 142: Tom Hanks; Tony Bennett

Episode 143: Taylor Swift; Rachel Maddow

Episode 144: Bill O'Reilly; Nicole Snooki Polizzi; The Lumineers

Episode 145: Donald Trump; Adam Levine; Carly Rae Jepsen

Episode 146: Dennis Quaid; Krysten Ritter; Diamond Rings

Episode 147: Denzel Washington, Paul Banks

Episode 148: Jim Cantore; Ken Burns; Andrew Bird

Episode 149: Katie Couric; Rita Ora

Episode 150: Steven Tyler and Joe Perry; Judy Greer; Aerosmith

Episode 151: Jason Sudeikis; Michael Che; Ultraĩsta

Episode 152: Ricky Gervais; Simon Helberg; Ty Segall

Episode 153: Brian Williams; Ne-Yo

Episode 154: Robin Williams; Lianne La Havas

Episode 155: Anderson Cooper; Myq Kaplan; Alberta Cross

Episode 156: Bradley Cooper; Robert Klein; Soundgarden

Episode 157: Julianna Margulies; Mumford & Sons

Episode 158: Alec Baldwin; Dirty Projectors

Episode 159: Zooey Deschanel; Lisa Lampanelli; Donald Fagen

Episode 160: Dr. Phil McGraw; Carmen Lynch; Divine Fits

Episode 161: Jessica Biel; Pete Townshend; Philip Phillips

Episode 162: Amy Poehler; Josh Hutcherson; Tegan and Sara

Episode 163: Scarlett Johansson; Willie Nelson; Gary Clark Jr.

Episode 164: Led Zeppelin; John Krasinski; Paloma Faith

Episode 165: Matt Damon; Martin Freeman; JD McPherson

Episode 166: Albert Brooks; Diana Krall

Episode 167: Bill Murray; Vintage Trouble

Episode 168: Dustin Hoffman; One Direction

Episode 169: Anne Hathaway; Jake Johnson; “The President's Own” United States Marine Band

Episode 170: Amanda Seyfried; Natalia Makarova; Awolnation

Episode 171: Billy Crystal; James Balong; Grizzly Bear

Episode 172: Jamie Foxx; Julie Chen; DIIV

Episode 173: Samuel L. Jackson; Carrie Brownstein & Fred Armisen; Jason Isbell and the 400 Unit

Episode 174: Tom Cruise; MNDR

Episode 175: Paul Rudd; Alicia Keys

Episode 176: Seth Rogen; John Witherspoon

Episode 177: Katie Holmes; Jon Bon Jovi

Episode 178: Naomi Watts; Jay Thomas; Darlene Love