Episode 1: Patricia Heaton, Brad Womack, Josh Groban

Episode 2: Matt LeBlanc, Julie Benz, Michael Carbonaro

Episode 3: Simon Baker, Nicole 'Snooki' Polizzi, Lloyd Banks

Episode 4: Amy Adams, Chris Colfer, Young the Giant

Episode 5: Cameron Diaz, Scott Foley, Far East Movement

Episode 6: Channing Tatum, Mamie Gummer, A Day To Remember

Episode 7: Sandra Oh, Rico Rodriguez, Nolan Gould, Ariel Winter, Fitz & the Tantrums

Episode 8: Seth Rogen, Elle Fanning, the Damned Things

Episode 9: Randy Jackson, Jennifer Lawrence, Andrew Norelli

Episode 10: Don Rickles, Wilmer Valderrama, New Politics

Episode 11: Ryan Gosling, Kourtney Kardashian, Ra Ra Riot

Episode 12: James McAvoy, Jim Sturgess, K.T. Tunstall

Episode 13: Cory Monteith, Joan Rivers, the Script

Episode 14: Anthony Hopkins, Hailee Steinfeld, Delta Spirit

Episode 15: Amy Poehler, Martha Plimpton, Cold War Kids

Episode 16: Ryan Seacrest, Melissa Leo, Cage the Elephant

Episode 17: Julianna Margulies, Matthew Bomer, the JaneDear Girls

Episode 18: Jamie Foxx, Sarah Shahi

Episode 19: Josh Brolin, Camille Grammer, Tinie Tempah

Episode 20: Kim Kardashian, Alex Trebek, One eskimO

Episode 21: Dr. Phil McGraw, Amy Sedaris, Nelly

Episode 22: Matthew Perry, Morena Baccarin, Pitbull

Episode 23: Adam Sandler, Bobby Flay, Ke$ha

Episode 24: Justin Bieber, Travis Barker featuring Game and Swizz Beats

Episode 25: Martin Lawrence, Dianna Agron, Jewel

Episode 26: Jeremy Renner, Eric Stonestreet, Black Dub

Episode 27: Javier Bardem, Flavor Flav, Stone Sour

Episode 28: Jason Sudeikis, Blake Griffin, Keri Hilson

Episode 29: Cameron Diaz, Henry Winkler, Cake

Episode 30: Nancy Grace, Twilight Singers

Episode 31: Owen Wilson, Kelly Ripa, Adele

Episode 32: Tom Hanks, Cee Lo Green

Episode 33: Bill Maher, Esperanza Spalding

Episode 34: Emily Blunt, Max Irons, Aaron Lewis

Episode 35: Amanda Seyfried, Nick Offerman, Henry Wolfe

Episode 36: Howard Stern, Michael Franti

Episode 37: Ryan Phillippe, Mila Kunis, the new 'Bachelorette', Ron Sexsmith

Episode 38: Jane Lynch, David Boreanaz, Avril Lavigne

Episode 39: Kristen Wiig, Adam Scott, the Wombats

Episode 40: Matthew McConaughey, Jena Malone, Young Dubliners

Episode 41: Liv Tyler, Mark Cuban, Brett Dennen

Episode 42: Rainn Wilson, Abbie Cornish, the Gaslight Anthem

Episode 43: Jake Gyllenhaal, Jerry Weintraub, Quinn Sullivan

Episode 44: Penelope Cruz, Paul Iacono, Oh Land

Episode 45: Sharon Osbourne, Bruno Tonioli, the Sounds

Episode 46: Johnny Knoxville, the latest 'Dancing With the Stars' castoff, Britney Spears

Episode 47: Danny McBride, Sara Ramirez, Duran Duran

Episode 48: David Beckham, Wes Craven, Sum 41

Episode 49: Katie Holmes, Dana Delany, Bad Religion

Episode 50: Christian Slater, Dr. Drew Pinsky, the latest 'Dancing with the Stars' castoff, the Decemberists

Episode 51: Norm MacDonald, Elisha Cuthbert, Funeral Party

Episode 52: Vin Diesel, Neve Campbell, Ellie Goulding

Episode 53: David Arquette, Mike Birbiglia, Asking Alexandria

Episode 54: Emma Roberts, Morgan Spurlock, the latest 'Dancing with the Stars' castoff, Jenny and Johnny

Episode 55: Eva Longoria, Patrick Warburton, Robyn

Episode 56: Tom Arnold, Alison Brie, Francis & the Lights

Episode 57: Courtney Cox, Gary Busey, Jessie J

Episode 58: Dwayne Johnson, the latest 'Dancing with the Stars' castoff, Sammy Hagar, the Belle Brigade

Episode 59: Robert Pattinson, Shailene Woodley, Lenka

Episode 60: Christoph Waltz, Kunal Nayyar, Phantogram

Episode 61: Martin Short, Kat Dennings, Alter Bridge

Episode 62: Mark Ruffalo, Jamie Oliver, the latest 'Dancing with the Stars' castoff, Robbie Robertson

Episode 63: Larry King, Jaimie Alexander, Augustana

Episode 64: Sofia Vergara, Manny Pacquiao, the Airborne Toxic Event

Episode 65: Rene Russo, Kristin Gore, k.d. lang

Episode 66: Anthony Hopkins, Andre Agassi, “Dancing with the Stars” castoff Kendra Wilkinson-Baskett

Episode 67: Kenneth Branagh, Ellie Kemper, the 2011 National School Scrabble Champions

Episode 68: Chris Hemsworth, Calexico

Episode 69: Rob Lowe, Ty Pennington, Wiz Khalifa

Episode 70: Nathan Fillion, the latest 'Dancing with the Stars' castoff, Calle 13

Episode 71: Chris O'Donnell, Ginnifer Goodwin, Zac Brown Band

Episode 72: Kate Hudson, Windell Middlebrooks, Raphael Saadiq

Episode 73: Topher Grace, Adam Carolla, Christina Perri

Episode 74: Albert Brooks, Chaz Bono, Rammstein

Episode 75: Khloe Kardashian Odom, 'Science Bob' Pflugfelder, Scott Weiland

Episode 76: Wanda Sykes, 'Bachelorette' Ashley Hebert, Foster the People

Episode 77: “Dancing with the Stars” winners Hines Ward & Kym Johnson, Taylor Lautner, Britney Spears

Episode 78: Jesse Tyler Ferguson, Sarah Vowell, Maybach Music Group featuring Rick Ross

Episode 79: Christina Aguilera, Mike Tyson, Big Sean

Episode 80: Carson Daly, Flavor Flav, I See Stars

Episode 81: Jason Sudeikis, Piers Morgan, Lykke Li

Episode 82: Paris Hilton, “Bachelorette” Ashley Hebert, spelling bee champion Sukanya Roy, Sara Bareilles

Episode 83: Kathy Griffin, J.J. Abrams, Friendly Fires

Episode 84: Elle Fanning, John Henson, Gruff Rhys

Episode 85: Sarah Ferguson, Ryan Lee, Ice Cube

Episode 86: Gordon Ramsay, Mike O'Malley, Hanson

Episode 87: Cedric the Entertainer, Ray Kurzweil, Breathe Carolina

Episode 88: Owen Wilson, Adam Levine, Panic! at the Disco

Episode 89: Eva Mendes, Jim Florentine, Pitbull

Episode 90: Molly Shannon, Tim Tebow, Matt Nathanson

Episode 91: Rosario Dawson, Michael Angarano, Jill Scott

Episode 92: Louis C.K., 'Bachelorette' Ashley Hebert, Missy Peregrym, Steel Magnolia

Episode 93: Jason Bateman, Dhani Jones, Hannibal Buress

Episode 94: Kevin Nealon, Dave Salmoni, Parachute

Episode 95: Shia LaBeouf, Aaron Rogers, 311

Episode 96: Rosanne Barr, Aaron Paul, Viva Brother

Episode 97: Kyra Sedgwick, Jay Forry, Theophilus London

Episode 98: John Stamos, Ashley Benson, Owl City

Episode 99: Dax Shepard, Stephen Moyer, Bush

Episode 100: Jon Favreau, Rutledge Wood, Big Talk

Episode 101: Daniel Craig, Sasha Alexander, The Features

Episode 102: Olivia Wilde, Adam Beach, Chris Young

Episode 103: Harrison Ford, Lady Gaga

Episode 104: Howie Mandel, Ashley Hebert, Jake Shimabukuro

Episode 105: Hank Azaria, Jim Sturgess, The Lonely Forest

Episode 106: James Franco, Ian McMillan, Coldplay

Episode 107: Jeremy Piven, Denise Richards, Todd Glass

Episode 108: Aziz Ansari, Chris Harrison, Eric Church

Episode 109: Jessica Alba, Steve Martorano, Luke Bryan

Episode 110: Jesse Eisenberg, Jerry Springer, Incubus

Episode 111: Betty White, Robert Rodriguez, Josh Ritter

Episode 112: Jamie Foxx, Affion Crocket, the Vaccines

Episode 113: Joel McHale, Joe Mantegna, the Band Perry

Episode 114: Zoe Saldana, Anton Yelchin, Amos Lee

Episode 115: Uncle Frank Memorial Celebration, Don Rickles

Episode 116: Elijah Wood, Jennifer Morrison, AWOLNATION

Episode 117: Khloe Kardashian, Gabe Dixon

Episode 118: Kristin Chenoweth, Freddie Wong & Brandon Laatsch

Episode 119: Nathon Fillion, Dave Salmoni and animals, Sia

Episode 120: Judge Judy Sheindlin, Emily VanCamp, Staind

Episode 121: Ty Burrell, Little League World Series champions, Cake

Episode 122: Steve Buscemi, Lily Collins, Ziggy Marley

Episode 123: Dr. Phil McGraw, Jon 'Bones' Jones & Quinton 'Rampage' Jackson, Switchfoot

Episode 124: Simon Cowell, the first 'Dancing with the Stars' castoff, Gavin DeGraw

Episode 125: Julie Bowen, Elisha Cuthbert, Pitbull

Episode 126: Ellen Pompeo, Sammi Giancola & Ronnie Magro, Daryl Hall

Episode 127: Dana Delany, Erin Andrews, Kelly Rowland

Episode 128: Eva Longoria, the latest 'Dancing with the Stars' castoff, Glen Campbell

Playing

Episode 129: Mark Wahlberg, Seth MacFarlane

Episode 130: Matt Stone & Trey Parker, Jessica Capshaw, Givers

Episode 131: Jane Lynch, Ramon Rodriquez, Blink 182

Episode 132: Evangeline Lilly, the latest 'Dancing with the Stars' castoff, Mute Math

Episode 133: Will Arnett, Jane Levy, J Cole

Episode 134: Antonio Banderas, 'Science Bob' Pflugfelder, Jane's Addiction

Episode 135: Paula Abdul, Kenny Wormald, Two Door Cinema Club

Episode 136: Don Rickles, “Dancing with the Stars” castoff Chynna Phillips, Peter Bjorn & John

Episode 137: Rob Lowe, Idris Elba, Chris Cornell

Episode 138: John Goodman, Lake Bell, Evanescence

Episode 139: Zach Galifianakis, Mike Judge, Primus

Episode 140: Hugh Laurie, Nicole “Snooki” Polizzi, Beavis & Butthead, “Dancing with the Stars” castoff Chaz Bono

Episode 141: David Spade, Tyra Banks, Brett Ratner, Frank Turner

Episode 142: Justin Timberlake, Rebecca Romijn, the Fray

Episode 143: Halloween Special: Paul Reubens, Bruno Tonioli, Megadeth

Episode 144: Adam Sandler, “Dancing with the Stars” castoff David Arquette, The Bangles

Episode 145: Ellen DeGeneres, Gabourey Sidibe, Chris Isaak

Episode 146: Eddie Murphy, Manny Pacquiao, Chickenfoot

Episode 147: Taylor Lautner, Herman Cain, Junip

Episode 148: Mickey Rourke, “Dancing with the Stars” castoff Nancy Grace, Wale

Episode 149: Robert Pattinson, Freida Pinto, Thompson Square

Episode 150: Kristen Stewart, Jon Bernthal, Feist

Episode 151: Sarah Michelle Geller, Miss Piggy, the Belle Brigade

Episode 152: Patricia Heaton, “Dancing with the Stars” finalists Rob Kardashian, Ricki Lake & J.R. Martinez, Christina Perri

Episode 153: Tim Allen, Jackson Rathbone, Miranda Lambert

Episode 154: Peter Facinelli, Jamie Oliver, Vince Gill

Episode 155: Artie Lange & Nick DiPaolo, Atticus Shafer, Lady Antebellum

Episode 156: David Beckham, Dana Delany, “Dancing with the Stars” winner J.R. Martinez, Nickelback

Episode 157: Regis Philbin, Paul Anka

Episode 158: Shaquille O'Neal, Julia Jones, David Guetta featuring Usher

Episode 159: Jim Parsons, Taylor Kitsch, My Morning Jacket

Episode 160: Matthew Morrison, Maggie Q, Yelawolf

Episode 161: Christina Applegate, Guy Ritchie, Jack's Mannequin

Episode 162: Armie Hammer, Jeri Ryan, T-Pain

Episode 163: Jane Fonda, Russell Brand, Lukas Nelson & Promise of the Real

Episode 164: Jeremy Renner, Judy Greer, Chevelle

Episode 165: Simon Cowell, Paula Abdul, Nicole Scherzinger & Antonio “L.A.” Reid, Anna Faris, The Kooks

Episode 166: Josh Holloway, Molly Sims, Death Cab for Cutie

Episode 167: Kathy Griffin, Jamie Bell, Young Jeezy

Episode 168: Robert Downey Jr., Lenny Kravitz