Christina Ricci, Mike 'The Situation' Sorrentino, Paul 'DJ Pauly D' DelVecchio, Vinny Guadagnino, Ronnie Ortiz-Magro, Mariachi El Bronx

S10 E01 • Tuesday, Jan 3, 2012 • Jan 3 • 45m

Kelsey Grammer, Octavia Spencer, Lloyd

S10 E02 • Wednesday, Jan 4, 2012 • Jan 4 • 45m

Tracy Morgan, Chris Paul, tUnE-yArDs

S10 E03 • Thursday, Jan 5, 2012 • Jan 5 • 45m

Don Cheadle, David Cross, Boyz II Men

S10 E04 • Friday, Jan 6, 2012 • Jan 6 • 45m

Channing Tatum, Ben Flajnik, Uh Huh Her

S10 E05 • Monday, Jan 9, 2012 • Jan 9 • 45m

Randy Jackson, Dermot Mulroney, Will Hoge

S10 E06 • Tuesday, Jan 10, 2012 • Jan 10 • 45m

Woody Harrelson, Yvonne Strahovski, Rodney Atkins

S10 E07 • Wednesday, Jan 11, 2012 • Jan 11 • 45m

Meryl Streep, Stephen Merchant, Kina Grannis

S10 E08 • Thursday, Jan 12, 2012 • Jan 12 • 45m

Katherine Heigl, Ne-Yo, Grouplove

S10 E09 • Tuesday, Jan 17, 2012 • Jan 17 • 45m

Will Arnett, Madeleine Stowe, Dana Gould

S10 E10 • Wednesday, Jan 18, 2012 • Jan 18 • 45m

Tom Arnold, Keke Palmer, Filter

S10 E11 • Thursday, Jan 19, 2012 • Jan 19 • 45m

Terrence Howard, Thomas Horn, Safetysuit

S10 E12 • Friday, Jan 20, 2012 • Jan 20 • 45m

Kiefer Sutherland, Bear Grylls, Young the Giant

S10 E13 • Monday, Jan 23, 2012 • Jan 23 • 45m

Elizabeth Banks, Ben McKenzie, Mindless Behavior

S10 E14 • Tuesday, Jan 24, 2012 • Jan 24 • 45m

Cuba Gooding Jr., Sara Hyland, Big Freedia

S10 E15 • Wednesday, Jan 25, 2012 • Jan 25 • 45m

Andre Agassi, J.B. Smoove, Seal

S10 E16 • Thursday, Jan 26, 2012 • Jan 26 • 45m

Kate Walsh, Marc Maron, Fishbone

S10 E17 • Monday, Jan 30, 2012 • Jan 30 • 45m

Martin Scorsese, Kenneth Branagh, Angels and Airwaves

S10 E18 • Tuesday, Jan 31, 2012 • Jan 31 • 45m

John Krasinski, Eloise Mumford, Gotye

S10 E19 • Wednesday, Feb 1, 2012 • Feb 1 • 45m

Director Martin Scorsese ("Hugo"); Kenneth Branagh ("My Week With Marilyn"). Also: Angels & Airwaves perform.

Gary Oldman, Tim Heidecker & Eric Wareheim, Korn

S10 E20 • Thursday, Feb 2, 2012 • Feb 2 • 45m

Michelle Williams, Angela 'Big Ang' Raiola, Pitbull

S10 E21 • Monday, Feb 6, 2012 • Feb 6 • 45m

Antonio Banderas, Damon Wayans Jr., 50 Cent

S10 E22 • Tuesday, Feb 7, 2012 • Feb 7 • 45m

Nathan Fillion, Josh Hutcherson, Far East Movement

S10 E23 • Wednesday, Feb 8, 2012 • Feb 8 • 45m

Courteney Cox, Mario Manningham & Ahmad Bradshaw, Tony Bennett

S10 E24 • Thursday, Feb 9, 2012 • Feb 9 • 45m

Jeff Goldblum, David Alan Grier, Lana Del Rey

S10 E25 • Monday, Feb 13, 2012 • Feb 13 • 45m

John Goodman, Kevin Nealon, Robin Thicke

S10 E26 • Tuesday, Feb 14, 2012 • Feb 14 • 45m

Sean 'Diddy' Combs, 'Science Bob' Pflugfelder, Miley Cyrus

S10 E27 • Wednesday, Feb 15, 2012 • Feb 15 • 45m

Chris Pine, Khloe Kardashian Odom, Puscifer

S10 E28 • Thursday, Feb 16, 2012 • Feb 16 • 45m

Eric Stonestreet, Kate Upton, Jake Owen

S10 E29 • Tuesday, Feb 21, 2012 • Feb 21 • 45m

Jessica Alba, Rep. Barney Frank, Nathan Myhrvold, Tower of Power

S10 E30 • Wednesday, Feb 22, 2012 • Feb 22 • 45m

Joel McHale, Justin Theroux, Die Antwoord

S10 E31 • Thursday, Feb 23, 2012 • Feb 23 • 45m

After the Oscars Special

S10 E32 • Sunday, Feb 26, 2012 • Feb 26 • 45m

Oprah Winfrey; Musical Guest Coldplay

Steven Tyler, Harvey Weinstein, Melanie Fiona

S10 E33 • Monday, Feb 27, 2012 • Feb 27 • 45m

Maria Menounos; Mat Kearney

S10 E34 • Tuesday, Feb 28, 2012 • Feb 28 • 45m

“Dancing with the Stars” contestant Maria Menounos; musical guest Mat Kearney.

Ed Helms, Leslie Bibb, Wallpaper

S10 E35 • Wednesday, Feb 29, 2012 • Feb 29 • 45m

Joan Rivers, Nicki Minaj

S10 E36 • Thursday, Mar 1, 2012 • Mar 1 • 45m

Dr. Phil McGraw; “The Bachelor” runner-up Lindzi Cox; Keane

S10 E37 • Monday, Mar 12, 2012 • Mar 12 • 45m

Will Ferrell; actress Ellie Kemper; Allen Stone

S10 E38 • Tuesday, Mar 13, 2012 • Mar 13 • 45m

Actor/comedian Will Ferrell; actress Ellie Kemper; music from Allen Stone.

Jonah Hill; Busy Philipps; The Crystal Method feat. Martha Reeves

S10 E39 • Wednesday, Mar 14, 2012 • Mar 14 • 45m

Channing Tatum; actor Genesis Rodriguez

S10 E40 • Thursday, Mar 15, 2012 • Mar 15 • 45m

Actor Channing Tatum; actress Genesis Rodriguez.

Jessica Simpson; Gael García Bernal

S10 E41 • Monday, Mar 19, 2012 • Mar 19 • 45m

Actress Jessica Simpson; actor Gael García Bernal.

Kristen Bell; actor Ice Cube; KISS performs

S10 E42 • Tuesday, Mar 20, 2012 • Mar 20 • 45m

Actress Kristen Bell; actor/musician Ice Cube; musical guests KISS.

Don Rickles; Amanda de Cadenet; Dr. Teeth and the Electric Mayhem

S10 E43 • Wednesday, Mar 21, 2012 • Mar 21 • 45m

Kristin Chenoweth; racecar driver Jimmie Johnson; Neon Trees

S10 E44 • Thursday, Mar 22, 2012 • Mar 22 • 45m

Zooey Deschanel; actor Steven Seagal; Shinedown

S10 E45 • Monday, Mar 26, 2012 • Mar 26 • 45m

Actress Zooey Deschanel; actor Steven Seagal; musical guests Shinedown.

Ashton Kutcher and Justin Bieber; All-American Rejects

S10 E46 • Tuesday, Mar 27, 2012 • Mar 27 • 45m

Adam Carolla; professional basketball player Kevin Durant; White Rabbits

S10 E47 • Wednesday, Mar 28, 2012 • Mar 28 • 45m

Carson Daly; actress Kristen Schaal

S10 E48 • Thursday, Mar 29, 2012 • Mar 29 • 45m

Seann William Scott; actress Christa Miller; Eli Young Band

S10 E49 • Monday, Apr 2, 2012 • Apr 2 • 45m

Edie Falco; Amy Schumer

S10 E50 • Tuesday, Apr 3, 2012 • Apr 3 • 45m