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Overview: |
Whitney Cummings, Nicole (S20E1)1/3/2012
Tracy Morgan, Rick & Corey Harrison, Shaggy (S20E2)1/4/2012
Michelle Williams, Josh Lucas, Chris Cornell (S20E3)1/5/2012
Glenn Close, Trevor Noah, Van Hunt (S20E4)1/6/2012
Janet Jackson, Larry the Cable Guy, Eli Young Band (S20E5)1/9/2012
Queen Latifah, Paul (S20E6)1/10/2012
Liam Neeson, Jack's Mannequin (S20E7)1/11/2012
Gerard Butler, Betty White (S20E8)1/12/2012
Tilda Swinton, Jennifer Hudson, Graffiti6 (S20E9)1/13/2012
Sam Worthington, Sherri Shepherd, Adam Lambert (S20E10)1/17/2012
Jennifer Garner, Ross Matthews, Parachute (S20E11)1/18/2012
Wanda Sykes (S20E12)1/19/2012
Steven Tyler, Ryan Seacrest, Randy Jackson, Sarah Colonna (S20E13)1/20/2012
Madonna, Chris Colfer, Joe Perry (S20E14)1/30/2012
Michelle Obama, Mark Harmon, Imelda May (S20E15)1/31/2012
Daniel Radcliffe, Vanessa Hudgens, Evanescence (S20E16)2/1/2012
Drew Barrymore, Blake Shelton (S20E17)2/2/2012
Debra Messing, Jean Dujardin, Bush (S20E18)2/3/2012
Dwayne Johnson, Miranda Cosgrove, Cirque du Soleil (S20E19)2/6/2012
Chelsea Handler, Jon Huntsman, 2Cellos (S20E20)2/7/2012
Chris Pine, Lisa Lampanelli, Anthony Hamilton (S20E21)2/8/2012
Denzel Washington, Octavia Spencer, Estelle (S20E22)2/9/2012
Rachel McAdams, Cee-Lo Green (S20E23)2/10/2012
Jennifer Lopez, the Civil Wars (S20E24)2/13/2012
Tyler Perry, Alexandra Wentworth, the Cranberries (S20E25)2/14/2012
Bill Maher, Punch Brothers (S20E26)2/15/2012
Amanda Seyfried, Billy Gardell, Monica, Brandy (S20E27)2/16/2012
Christina Aguilera, Dave Salmoni, The Fray (S20E28)2/17/2012
Taylor Swift, Michael Clarke Duncan, Robert Randolph, Los Lobos, Chris Layton (S20E29)2/20/2012
Bill O'Reilly, Rob Riggle, Rumer (S20E30)2/21/2012
Tim Allen, Rocket City Rednecks (S20E31)2/22/2012
Meredith Vieira, Jackson Murphy (S20E32)2/23/2012
Jennifer Aniston, Adam Levine (S20E33)2/24/2012
Megan Fox, Michel Hazanavicius, Mariachi El Bronx (S20E34)2/27/2012
Rob Schneider, Khloe Kardashian Odom, Mona (S20E35)2/28/2012
Sen. John McCain, Elizabeth Olsen, Romeo Santos (S20E36)2/29/2012
Julianne Moore, Dr. Brady Barr, Chickenfoot (S20E37)3/1/2012
Emily Blunt, Geoff Stults, Scars on 45 (S20E38)3/2/2012
Jessica Simpson, Adam Carolla, Soja (S20E39)3/12/2012
Jonah Hill, Bethenny Frankel, Shooter Jennings (S20E40)3/13/2012
Channing Tatum, Drew Brees, Meat Loaf (S20E41)3/14/2012
Kiefer Sutherland, Kathryn Hahn, Andy Grammer (S20E42)3/15/2012
Jimmy Fallon, 8-year-old presidential whiz kid H.L. McCullough, Toby Keith (S20E43)3/16/2012
Jamie Lee Curtis, Armie Hammer (S20E44)3/19/2012
Rep. Ron Paul, Frank Caliendo, the Wanted (S20E45)3/20/2012
Kim Kardashian (S20E46)3/21/2012
Arsenio Hall, Lily Collins (S20E47)3/22/2012
Christina Aguilera, Melanie Fiona featuring J. Cole (S20E48)3/23/2012
Elizabeth Banks, Carson Daly (S20E49)3/26/2012
The Pierces (S20E50)3/27/2012
Rainn Wilson, Debbie Gibson, Gavin DeGraw (S20E51)3/28/2012
Piers Morgan, Liam Hemsworth, Mat Kearney (S20E52)3/29/2012
Nicole Richie, Alan Jackson (S20E53)3/30/2012
Betty White, D.J. Pauly D (S20E54)4/2/2012
Maya Rudolph, Jason Biggs, Gym Class Heroes (S20E55)4/3/2012
David Gregory, Cee-Lo Green, Seal (S20E56)4/4/2012
Zac Efron, Jennie Garth, Grace Potter and the Nocturnals (S20E57)4/5/2012
Kristin Chenoweth, Julie Scardina, Rodrigo y Gabriela (S20E58)4/6/2012
Jane Lynch, Kevin Hart, Esperanza Spalding (S20E59)4/9/2012
Josh Hutcherson, Rachel Maddow, Eric Turner featuring Lupe Fiasco and Tinie Tempah (S20E60)4/10/2012
Albert Brooks, Austin (S20E61)4/11/2012
Blake Shelton, Chris Diamantopoulos, Feist (S20E62)4/12/2012
Jason Segel, Anna Faris, Far East Movement (S20E63)4/13/2012
Jesse Tyler Ferguson, Aubrey O'Day, Train (S20E64)4/23/2012
Jack Black, Daniel Holzman & Michael Chernow, Beirut (S20E65)4/24/2012
Adam Levine, Ziggy Marley (S20E66)4/25/2012
Diane Keaton, Natalie Coughlin, Moby (S20E67)4/26/2012
Mel Gibson, the Wanted (S20E68)4/27/2012
Steve Martin, Rashida Jones, Steve Martin & the Steep Canyon Rangers (S20E69)4/30/2012
Cameron Diaz, William Shatner, Lee Brice (S20E70)5/1/2012
Scarlett Johansson, Blake Shelton, K'Naan featuring Nelly Furtado (S20E71)5/2/2012
Robert Downey Jr., Katharine McPhee, Toast To Freedom (S20E72)5/3/2012
Kristen Stewart, James Morrison (S20E73)5/4/2012
Michelle Pfeiffer, Bear Grylls, Snow Patrol (S20E74)5/7/2012
Rick Santorum, Taylor Kitsch, B.o.B., O.A.R. (S20E75)5/8/2012
Garry Shandling, Alison Brie, the winner of 'The Voice' (S20E76)5/9/2012
Howie Mandel, Vinny Guadagnino, Sara Watkins (S20E77)5/10/2012
Jenna Fischer, Jay Mohr (S20E78)5/11/2012
Kourtney, Kim & Khloe Kardashian, Donny Deutsch, Karmin (S20E79)5/14/2012
Wanda Sykes, David Hasselhoff, Santana (S20E80)5/15/2012
Joel McHale, Jarod Miller, Bobby Brown (S20E81)5/16/2012
Hugh Laurie, Robert Griffin III (S20E82)5/17/2012
Sherri Shepherd, Julianne Hough, Tenacious D (S20E83)5/18/2012
Kevin Costner, Bailee Madison, Lisa Marie Presley (S20E84)5/21/2012
Josh Brolin, Ali Wentworth, Glenn Frey (S20E85)5/22/2012
Charlize Theron, Jeffrey Dean Morgan, Juanes (S20E86)5/23/2012
Glenn Close, the winner of American Idol, Nelly Furtado (S20E87)5/24/2012
Gen. Colin Powell, Greg Gadson, All American Rejects (S20E88)5/25/2012
Martin Short, Aubrey Plaza, Def Leppard (S20E89)6/4/2012
Emma Stone, Chris Hemsworth, Chris Robinson Brotherhood (S20E90)6/5/2012
Julia Louis-Dreyfus, the Beach Boys (S20E91)6/6/2012
Catherine Zeta-Jones, Louis Zamperini, Bret Michaels (S20E92)6/7/2012
Tom Cruise, skydivers Felix Baumgartner & Joe Kittinger, Kool & the Gang (S20E93)6/8/2012
Elizabeth Banks, Dan Patrick, Brandi Carlisle (S20E94)6/11/2012
Patrick Duffy, Linda Grey, Larry Hagman, Meghan McCain, Meiko (S20E95)6/12/2012
Terry Bradshaw, Ernie Brown Jr., Neal James, Rachel Bradshaw (S20E96)6/13/2012
Penelope Cruz, Rick Harrison, We Are Augustines (S20E97)6/14/2012
Salma Hayek, Adam Brody, Olly Murs (S20E98)6/15/2012
Steve Carell, Cory Booker, Glen Hansard (S20E99)6/18/2012
Matthew McConaughey, Natasha Leggero, Grouplove (S20E100)6/19/2012
Andy Samberg, Seth MacFarlane, Joe Henry featuring Lisa Hannigan (S20E101)6/20/2012
Katy Perry, Needtobreathe (S20E102)6/21/2012
Chris Pine, Rachael Ray, Everclear (S20E103)6/22/2012
Louis C.K., Lolo Jones, Delta Rae (S20E104)6/25/2012
Matt LeBlanc, Sig Hansen & Keith Colburn, Robin Thicke (S20E105)6/26/2012
Mila Kunis, Jim Norton, Justin Bieber (S20E106)6/27/2012
Tyler Perry, Rhys Ifans, Keane (S20E107)6/28/2012
Andrew Garfield, Of Monsters And Men (S20E108)6/29/2012
Wanda Sykes, Rob Riggle, Kimbra (S20E109)7/9/2012
Zachary Levi, B.o.B. (S20E110)7/10/2012
Morgan Freeman, (S20E111)7/11/2012
Denis Leary, Olivia Munn, Kenny Chesney (S20E112)7/12/2012
Dana Carvey, Nicki Minaj (S20E113)7/13/2012
Charlie Sheen (S20E114)7/16/2012
Kate Beckinsale, Adam Carolla (S20E115)7/17/2012
Newt Gingrich, Nicole (S20E116)7/18/2012
Rachel Weisz, Aaron Paul (S20E117)7/19/2012
Ben Stiller, Rose Byrne, Missy Higgins (S20E118)7/20/2012
Vince Vaughn, Travis Pastrana, Aretha Franklin (S20E119)7/23/2012
Colin Farrell, Jenni (S20E120)7/24/2012
Jessica Biel, Kevin Smith, the Lumineers (S20E121)7/25/2012
Julie Scardina, Dwyane Wade, MoZella (S20E122)7/26/2012
Jeremy Renner, Betty White, Joss Stone (S20E123)7/27/2012
Michelle Obama, Norah Jones (S20E124)8/13/2012
Kelsey Grammer, Jordan Burroughs, Ryan Star (S20E125)8/14/2012
Sylvester Stallone, Missy Franklin, Dwight Yoakam (S20E126)8/15/2012
Kristen Bell, Ryan Lochte, Regina Spektor (S20E127)8/16/2012
Jason Statham, Allyson Felix, the Offspring (S20E128)8/17/2012
Maya Rudolph, Jeff Foxworthy, Morning Parade (S20E129)8/20/2012
Shia LaBeouf, Jean-Claude Van Damme, fun. (S20E130)8/21/2012
Katie Couric, Dax Shepard, Emeli Sande (S20E131)8/22/2012
Kirsten Dunst, Chris Matthews, Smashing Pumpkins (S20E132)8/23/2012
Howie Mandel, Alejandro Escovedo (S20E133)8/24/2012
Dennis Miller, Joshua Radin (S20E134)8/27/2012
Owl City with Carly Rae Jepsen (S20E135)8/28/2012
Bill Maher, Tristan Prettyman (S20E136)8/29/2012
Savannah Guthrie, Dolph Lundgren (S20E137)8/30/2012
Lauren Graham, Dan Patrick (S20E138)8/31/2012
Kevin Hart, Rep. Ron Paul, Robert Cray (S20E139)9/4/2012
Adam Levine, Magic Johnson, Grace Potter (S20E140)9/5/2012
Ellen DeGeneres, Josh Lucas, Billy Ray Cyrus (S20E141)9/6/2012
Matthew Perry, Meghan McCain, OneRepublic (S20E142)9/7/2012
Richard Gere, Anthony Robles, Rascal Flatts (S20E143)9/17/2012
Justin Timberlake, Steve Nash, Ryan Bingham (S20E144)9/18/2012
Amy Poehler, Joe Scarborough, Big & Rich (S20E145)9/19/2012
Viola Davis, Paul Wesley, Bonnie Raitt (S20E146)9/20/2012
Zooey Deschanel, Anthony Anderson, ZZ Top (S20E147)9/21/2012
David Spade, Giancarlo Esposito, Rebecca Ferguson (S20E148)9/24/2012
Ann Romney, Seth MacFarlane, Bettye LaVette (S20E149)9/25/2012
Kirstie Alley, Mike (S20E150)9/26/2012
Liam Neeson, Lisa Lampanelli, the Gaslight Anthem (S20E151)9/27/2012
Christina Aguilera, Sherri Shepherd, the Piano Guys (S20E152)9/28/2012
Bryan Cranston, Rebel Wilson, Cher Lloyd (S20E153)10/1/2012
Carol Burnett, Armie Hammer, Lang Lang (S20E154)10/2/2012
Christina Applegate, Apolo Anton Ohno (S20E155)10/3/2012
Ben Affleck, Octavia Spencer, Neon Trees (S20E156)10/4/2012
Colin Farrell, Medal of Honor recipient Dakota Meyer, the Hives (S20E157)10/5/2012
Arnold Schwarzenegger, Bubba Watson, the Wallflowers (S20E158)10/8/2012
Tyler Perry, Oscar Pistorius, Plain White T's (S20E159)10/9/2012
Chelsea Handler, Placido Domingo (S20E160)10/10/2012
Terry Bradshaw, Mark Kelly, Grizzly Bear (S20E161)10/11/2012
Whitney Cummings, Rove McManus, the Script (S20E162)10/12/2012
Halle Berry, Ali Wentworth, Gary Clark Jr. (S20E163)10/22/2012
Denzel Washington, Richard Engel, M. Ward (S20E164)10/23/2012
President Barack Obama, No Doubt (S20E165)10/24/2012
Russell Brand, Jane Lynch (S20E166)10/25/2012
Sarah Silverman, Paula Deen (S20E167)10/26/2012
Simon Cowell, Britney Spears, Billy Gardell, Two Door Cinema Club (S20E168)10/29/2012
John C. Reilly, Jenni (S20E169)10/30/2012
Taylor Lautner, Lior Suchard, Macy Gray (S20E170)10/31/2012
Jamie Lee Curtis, Maggie Elizabeth Jones, ZZ Ward (S20E171)11/1/2012
Marion Cotillard, Olate Dogs (S20E172)11/2/2012
Kristen Stewart, Dax Shepard, Kip Moore (S20E173)11/5/2012
Daniel Craig, Dave Salmoni, Diamond Rings (S20E174)11/7/2012
Sally Field, Chris Matthews, Lord Huron (S20E175)11/8/2012
Meredith Vieira & Richard Cohen, Christina Perri (S20E176)11/9/2012
Lea Michele, Nev Schulman, Toby Keith (S20E177)11/12/2012
Keira Knightley, Whitney Cummings, Gin Wigmore (S20E178)11/13/2012
Helen Hunt, Paul (S20E179)11/14/2012
Tim Allen, Nolan Gould, Switchfoot (S20E180)11/15/2012
Chris Matthews, the Mowgli's (S20E181)11/16/2012
Jennifer Lawrence, Phil & Willie Robertson, Andy Grammer (S20E182)11/19/2012
Lindsay Lohan, David Gregory, Wanda Jackson (S20E183)11/20/2012
Joseph Gordon-Levitt, Kris Jenner, Dan Cummings (S20E184)11/21/2012
Bradley Cooper, Natasha Leggero, PSY (S20E185)11/22/2012
Jim Parsons, Maggie Elizabeth Jones, Delta Rae (S20E186)11/26/2012
Julie Bowen, (S20E187)11/27/2012
Wanda Sykes, Blake Shelton (S20E188)11/28/2012
Newt Gingrich, Ron Shirley, Grouplove (S20E189)11/29/2012
Marisa Tomei, Carson Daly, Il Volo (S20E190)11/30/2012
Gerard Butler, Olivia Munn, the Polyphonic Spree (S20E191)12/3/2012
Khloe Kardashian Odom, Adam Carolla, Matisyahu (S20E192)12/4/2012
Don Johnson, Julie Scardina, Darius Rucker (S20E193)12/5/2012
Bill O'Reilly, Krysten Ritter, Paloma Faith (S20E194)12/6/2012
Leslie Mann, Jim Rome, Garbage (S20E195)12/7/2012
Matt Damon, Chris Pratt, Of Monsters And Men (S20E196)12/10/2012
Ewan McGregor, Bailee Madison, Allen Stone (S20E197)12/11/2012
Albert Brooks, Kerry Washington, Willy Moon (S20E198)12/12/2012
Hugh Jackman, Maria Sharapova, J.D. McPherson (S20E199)12/13/2012
Bette Midler, Judd Apatow, Pentatonix (S20E200)12/14/2012
Megan Fox, Johnny Manziel, Colbie Caillat (S20E201)12/17/2012
Quentin Tarantino, LeAnn Rimes (S20E202)12/18/2012
Jamie Foxx, Carl Reiner, the winner of (S20E203)12/19/2012
Katherine Heigl, Marjorie Johnson, Johnny Mathis (S20E204)12/20/2012
Terry Bradshaw, Elle Fanning, Chris Mann (S20E205)12/21/2012 |