Episode 1: Howie Mandel, Dock Diving Dogs, Dirty Projectors

Episode 2: Jeremy Piven, Rumer Willis, Black Crowes

Episode 3: Jason Bateman and White House official Dr. John P. Holdren

Episode 4: Billy Crystal and John Fogerty

Episode 5: Neil Patrick Harris, Steve Mazan, Edward Sharpe & The Magnetic Zeros

Episode 6: Tony Blair and Julianna Margulies

Episode 7: Jay-Z, Martha Stewart, and George Jones

Episode 8: Matt Damon and Jack Hanna

Episode 9: Michael Douglas, Leighton Meester, and Kid Cudi

Episode 10: President Barack Obama

Episode 11: Former President Bill Clinton and LeBron James

Episode 12: Simon Baker and Mary J. Blige

Episode 13: Craig Ferguson, Kristin Chenoweth, and Snow Patrol

Episode 14: Bruce Willis, LL Cool J, and The Noisettes

Episode 15: Felicity Huffman, Dr. Mehmet Oz, and The Avett Brothers

Episode 16: Kelsey Grammer, Alyson Hannigan, and Miranda Lambert

Episode 17: Madonna and Harry Connick Jr.

Episode 18: Woody Harrelson and Kim Kardashian

Episode 19: Larry David, Olivia Wilde and Tom Russell

Episode 20: Steve Martin and Lea Michele

Episode 21: CBS Orchestra bandleader Paul Shaffer, Eliza Dushku and KISS

Episode 22: Vince Vaughn, Carey Mulligan, and Rosanne Cash

Episode 23: Kristin Davis and Barry Sonnenfeld

Episode 24: Jon Hamm, Andy Kindler, and Brett Dennen

Episode 25: Garry Shandling, Kaley Cuoco, and Tim McGraw

Episode 26: Sienna Miller, Aziz Ansari, and Dead By Sunrise

Episode 27: Tina Fey, Chris Russo, and Mika

Episode 28: Don Rickles and Built To Spill

Episode 29: Uma Thurman and Tim McGraw

Episode 30: Charles Barkley, Cheryl Hines, Harper Simon

Episode 31: Courteney Cox, William Knoedelseder, Florence and the Machine

Episode 32: Patrick Dempsey, Bud Selig, Sting

Episode 33: Tom Hanks, Weezer, a Top Ten List presented by Chad Ochocinco

Episode 34: Regis Philbin, Brian Regan, Weezer

Episode 35: Julia Louis-Dreyfus, Guy Fieri, Carrie Underwood, Top Ten with Meb Keflezighi

Episode 36: Al Gore, Brad Paisley, a Top Ten List presented by Michael Bublé

Episode 37: Bill Cosby, Ryan Bingham

Episode 38: Derek Jeter, Jorge Posada & Andy Pettitte, Bill Maher, Keith Urban

Episode 39: Ricky Gervais, Brian Regan, Ralph Stanley and the Clinch Mountain Boys

Episode 40: Bill Murray, Gabourey “Gabby” Sidibe

Episode 41: Jack Hanna, Shakira

Episode 42: Kate Walsh, Norah Jones

Episode 43: Kid Scientists, Amanda Peet, the Cribs with Johnny Marr

Episode 44: Mariah Carey, Kumail Nanjiani

Episode 45: Sharon Stone, Seth Meyers, Wyclef Jean and Cyndi Lauper

Episode 46: Penelope Cruz, Joe Cada, The Script

Episode 47: Robert Pattinson, Ray Davies

Episode 48: Stephen Colbert, Emily Blunt, John Mayer

Episode 49: Viggo Mortensen, Paula Poundstone, and Lyle Lovett

Episode 50: Robin Williams, Ashley Greene

Episode 51: Zac Efron, Carrie Fisher, Rihanna

Episode 52: Natalie Portman, Adam Lambert

Episode 53: Ray Romano, Anna Kendrick

Episode 54: Barbara Walters, Blakroc

Episode 55: Rachel Weisz, Rob Thomas

Episode 56: Kate Hudson, Dr. James Hansen, Tori Amos

Episode 57: Kyra Sedgwick, Brian Scott McFadden, Joe Perry

Episode 58: Hugh Grant, Zoe Saldana, Alicia Keys

Episode 59: Sarah Jessica Parker, Leona Lewis

Episode 60: Robert Downey Jr, Martin Short, and Kris Allen

Episode 61: Shannon Eis, Jude Law, and Matisyahu

Episode 62: Tobey Maguire, Tom Dreesen, and Alicia Keys

Episode 63: Maggie Gyllenhaal and John Witherspoon

Episode 64: Susan Sarandon, Colbie Caillat

Episode 65: Alec Baldwin, Jay Thomas, Darlene Love

Episode 66: Michael Cera, Jenna Elfman, David Gray

Episode 67: Amy Adams, Zachary Levi, Vampire Weekend

Episode 68: Sigourney Weaver, Marv Albert, Julian Casablancas

Episode 69: Bradley Cooper, Rachel Maddow, Nick Jonas

Episode 70: Teri Hatcher, Jake Johannsen, The Dodos

Episode 72: Whoopi Goldberg, Jason Sudeikis, Findlay Brown

Episode 73: Kiefer Sutherland, Keri Russell, The Hotrats

Episode 74: Denzel Washington, Dr. O. Wayne Isom, The Low Anthem

Episode 75: Glenn Close, Eddie Brill, Matt Morris

Episode 76: Kristen Bell, Randy Jackson, The Heavy

Episode 77: Dwayne Johnson, Bettina Luescher, The Swell Season

Episode 78: Claire Danes, Will Arnett, James Taylor, Carole King

Episode 79: Harrison Ford, Lou Reed, Blind Boys of Alabama

Episode 80: Catherine Zeta-Jones, Jeff Stilson, Charlotte Gainsbourg

Episode 81: Bruce Willis, Ne-Yo

Episode 82: John Travolta, Shaun White, Ben Harper & Relentless7

Episode 83: Sarah Silverman, Jeremy Renner, Nneka, a Top Ten List presented by Paris Hilton

Episode 84: Jamie Foxx, Amanda Seyfried, Robin Thicke

Episode 85: Jack Hanna, Joe Wong, the Swell Season

Episode 86: Drew Brees, Sandra Bullock, Josh Turner

Episode 87: Jennifer Garner, the Sports Illustrated swimsuit issue cover model, Sade

Episode 88: Jessica Biel, Christoph Waltz

Episode 89: Regis and Joy Philbin, a Top Ten List presented by Benicio Del Toro

Episode 90: Jeff Bridges, Joe Wong, the Soft Pack

Episode 91: Tracy Morgan, the Daytona 500 winner, Fanfarlo

Episode 92: Ben Kingsley, Mary J. Blige

Episode 93: Ewan McGregor, Abby Elliott, Mumford & Sons

Episode 94: Scarlett Johansson, Daniel Merriweather

Episode 95: Nicole Richie, comic Tom Papa.

Episode 96: Bill Murray, Ludacris

Episode 97: Mitt Romney, Mia Wasikowska

Episode 98: Jerry Seinfeld, Tom Brokaw

Episode 99: Tom Hanks, Spoon

Episode 100: Matt Damon, Danny Bhoy, Corinne Bailey Rae

Episode 101: Kelly Ripa, Lady Antebellum

Episode 102: Julianna Margulies, Broken Bells

Episode 103: Jessica Simpson, Mehmet Oz, Rod Blagojevich, Alkaline Trio

Episode 104: Donald Trump

Episode 105: Liev Schreiber, Jim Gaffigan, Drive-By Truckers

Episode 106: Jennifer Aniston, Charles Moore

Episode 107: Jimmy Kimmel, Kirstie Alley

Episode 109: Gerard Butler, Mindy Kaling, Free Energy

Episode 110: Greg Kinnear, Lacey Brown, Michael Buble, Harry Smith

Episode 111: Ben Stiller, Jamie Oliver, Justin Bieber

Episode 112: Tina Fey, Bryan Cranston, Joan Jett and the Blackhearts

Episode 113: Robin Williams, Paige Miles, Usher

Episode 114: Luke Wilson, Pam Stout, Alan Jackson

Episode 115: Ricky Gervais, Turkey Callers, The Whigs

Episode 116: Sam Worthington, Mike Greenberg & Mike Golic, Patty Loveless

Episode 117: Nathan Lane, She & Him

Episode 118: Steve Carell, Brad Stevens

Episode 119: Chris Rock, Jane Lynch

Episode 120: Jennifer Lopez, Mike Golic & Mike Greenberg, American Idol castoffs Andrew Garcia & Katie Stevens

Episode 121: Amanda Peet, David Chang, Justin Nozuka

Episode 122: Eddie Murphy, Kaley Cuoco, Jakob Dylan

Episode 123: David Spade, Lisa P. Jackson, Broken Social Scene

Episode 124: Kelsey Grammer, Jeff Altman, Sharon Jones and the Dap-Kings

Episode 125: Dr. Phil McGraw, the latest American Idol castoff

Episode 126: Courtney Love, Michael Caine, Hole

Episode 127: Robert Downey Jr., OK Go

Episode 128: Gwyneth Paltrow, Broadway cast of ``American Idiot''

Episode 129: David Beckham, Mike Birbiglia, Hold Steady

Episode 130: Mickey Rourke, Jim Parsons, eliminated ``American Idol'' contestant Siobhan Magnus

Episode 131: Russell Crowe, Sharon Jones and the Dap-Kings

Episode 132: Jack Hanna, Kerry Washington, Willie Nelson

Episode 133: Brian Williams, Beth Ostrosky Stern, Court Yard Hounds

Episode 134: Amanda Peet, Nick Griffin, Wale

Episode 135: Evangeline Lilly, Sam Rockwell, Aaron Kelly, Million Dollar Quartet

Episode 136: Queen Latifah, Will Forte, MGMT performs, Dallas Braden presents the Top Ten List

Episode 137: Michael Keaton, Jenna Fischer

Episode 138: Alec Baldwin, The National

Episode 139: Mike Myers, Tom Dreesen

Episode 140: Matthew Fox, Zac Brown Band,

Episode 141: Jonah Hill, Janelle Monae, John Carney, a Top Ten List presented by Miss USA Rima Fakih

Episode 142: Russell Brand, Johnny

Episode 143: Katherine Heigl, Steve Cohen, Band of Horses

Episode 144: Ashton Kutcher, Larry Miller, Michael Ammar, Brooks & Dunn with Reba McEntire

Episode 145: Jake Gyllenhaal, Dr. Edward B. Overton

Episode 146: Sarah Jessica Parker, the Black Keys

Episode 147: Don Rickles, Piedmont Bird Callers, John Prine with Yim Yames of My Morning Jacket

Episode 148: Jessica Biel, Lee DeWyze

Episode 149: Kate Hudson, Indianapolis 500 winner Dario Franchitti, Sarah McLachlan

Episode 150: Bradley Cooper, Khloe & Kourtney Kardashian, Christina Aguilera

Episode 151: Jaden Smith

Episode 152: Sean Hayes, Robert Klein, Allison Moorer

Episode 153: Helen Mirren, Colin Hanks

Episode 154: Devo

Episode 155: Diddy, Emeril Lagasse, Dirty Money, John Goodman

Episode 156: Miley Cyrus, Rick Harrison

Episode 157: Jada Pinkett Smith, Larry Miller, Fred Eaglesmith

Episode 158: Salma Hayek, Chris

Episode 159: Regis Philbin, Trombone Shorty & Orleans Avenue

Episode 160: Adam Sandler, Bettye LaVette

Episode 161: Kevin James, Thomas L. Friedman

Episode 162: Jay-Z, Eminem

Episode 163: Kristen Stewart, Gary Faulkner, Tokyo Police Club, Top Ten with John Isner

Episode 164: Dolly Parton, Landon Donovan

Episode 165: Julianne Moore, Mike Massimino, The New Pornographers

Episode 166: Taylor Lautner, Barry Sonnenfeld

Episode 167: Nicolas Cage, Steel Train

Episode 168: Kristin Chenoweth, Jonathan Alter, M.I.A.

Episode 169: Joseph Gordon-Levitt, Laurie Anderson

Episode 170: Kyra Sedgwick, Bret Michaels, Jimmy Cliff

Episode 171: Sylvester Stallone, Rob Corddry, Robyn

Episode 172: Steve Carell, Selena Gomez, Sheryl Crow

Episode 173: Bill Murray, Alejandro Escovedo

Episode 174: Joan Rivers, Bill Burr, Steve Winwood

Episode 175: Denis Leary, Albert Pujols, Jimmy Webb

Episode 176: Luke Wilson, Kristen Schaal, Dierks Bentley

Episode 177: Michael Keaton, The Flaming Lips

Episode 178: Paul Rudd, Bill Burr, Interpol

Episode 179: Will Ferrell, Nas and Damian Marley

Episode 180: Michael Cera, Rachel Maddow, Herbie Hancock

Episode 181: Julia Roberts, The Dead Weather

Episode 182: Mark Wahlberg, Cory Kahaney, VV Brown

Episode 183: Brian Williams, Big Boi

Episode 186: Drew Berrymore, Katy Perry

Episode 187: Christina Applegate, Tom Dreesen, The Pretty Reckless

Episode 188: Anne Heche, Ken Burns, The Specials

Episode 189: Jessica Alba, Jimmie Walker, Ryan Bingham & The Dead Horses

Episode 190: Katie Holmes, Rick Harrison

Episode 191: Julianna Margulies, the Black Angels

Episode 192: Jack Hanna, Jamey Johnson

Episode 193: Bill Clinton, Chromeo

Episode 194: Simon Baker, Nicole

Episode 195: Joaquin Phoenix, Tom Jones

Episode 196: James Franco, Sofia Vergara, Shakira

Episode 197: Shia LaBeouf, Brian Regan, Jimmy Eat World

Episode 198: Katherine Heigl, Daniel Dae Kim

Episode 199: Jon Stewart, N.E.R.D.

Episode 200: Mayor Michael Bloomberg, Jesse Eisenberg

Episode 201: Tom Selleck, Janet Elder, Tired Pony

Episode 202: Blake Lively, Michael C. Hall, Drake

Episode 203: Bruce Willis, will.i.am with Nicki Minaj

Episode 204: Tony Blair, Mavis Staples with Jeff Tweedy

Episode 205: David Axelrod, Julie Chen

Episode 206: Stephen Colbert, Johnny Knoxville, Gorillaz

Episode 207: Rachael Ray, Allan Havey, Antony & the Johnsons

Episode 208: Jim Parsons, Geoffrey Canada, Mark Ronson with Q-Tip and MNDR

Episode 209: Matt Damon, My Morning Jacket

Episode 210: Hilary Swank

Episode 211: Diddy, Emma Stone, Diddy-Dirty Money

Episode 212: David Duchovny

Episode 213: Charles Barkley, Garry Dell'Abate, Kings of Leon

Episode 214: Taylor Swift, Seth Meyers

Episode 215: Dana Carvey

Episode 216: Will Ferrell, Kid Cudi

Episode 217: Michael J. Fox, Shaun White

Episode 218: Robert Downey Jr., Elvis Costello

Episode 219: Episode 219

Episode 220: Tina Fey

Episode 221: Chilean Miner Edison Pena

Episode 222: Steve Martin

Episode 223: Harrison Ford, Cee Lo Green

Episode 224: Denzel Washington, Bon Jovi

Episode 225: Russell Crowe, Quincy Jones, Snoop Dogg

Episode 226: Cher, Bruno Mars

Episode 227: Kelly Ripa, Greg Fitzsimmons,Reba McEntire

Episode 228: Emma Watson, Scott Caan, Rascal Flatts

Episode 229: Jay-Z, Jamie Oliver, Rihanna

Episode 230: Jake Gyllenhaal, Fran Lebowitz, Ne-Yo

Episode 231: Jim Carrey, Nikki Minaj, Sitting-In, BJ Thomas

Episode 232: Billy Bob Thornton, Mike E. Winfield, The Secret Sisters

Episode 233: Natalie Portman, Jay Pharoah

Episode 234: Jerry Seinfeld, Colin Firth

Episode 235: Salvatore Giunta, Sahara Smith

Episode 236: Ray Romano, John Mellencamp

Episode 237: Johnny Depp, Ra Ra Riot , George Benson

Episode 238: Barbara Walters, Alison Balsom

Playing

Episode 239: Bill O'Reilly

Episode 240: Reese Witherspoon, Colin Quinn

Episode 241: Ricky Gervais, Hailee Steinfeld, Diddy-Dirty Money

Episode 242: Paul Rudd

Episode 243: Tom Dreesen, Ronnie Spector

Episode 244: Matt Damon, Florence and The Machine

Episode 245: Robert DeNiro & Dustin Hoffman

Episode 246: Jack Black, Marv Albert

Episode 247: Jamie Foxx, Sofia Vergara

Episode 248: Denis Leary, Grace Potter & the Nocturnals

Episode 249: Amanda Peet, Jay Thomas,Darlene Love