12x1 - Courteney Cox; “The Bachelor” Juan Pablo Galavis; Johnathan Rice

January 6, 2014

From "Cougar Town", actress Courteney Cox; “The Bachelor” Juan Pablo Galavis; musical guest Johnathan Rice.

12x3 - Sofia Vergara; Emmy Rossum; Yuna

January 8, 2014

From "Modern Family", actress Sofia Vergara; actress Emmy Rossum; musical guest Yuna.

12x4 - Kristen Wiig; Nick Kroll; Lord Huron

January 9, 2014

Actress Kristen Wiig; comedian Nick Kroll; musical guests Lord Huron.

12x5 - Kevin Costner; Harry Connick Jr.; Michael Kiwanuka

January 13, 2014

From "Jack Ryan: Shadow Recruit", actor Kevin Costner; from "American Idol", judge Harry Connick Jr.; musical guest Michael Kiwanuka.

12x6 - Matt LeBlanc; Lupita Nyong'o; The Fray

January 14, 2014

From "Episodes", actor Matt LeBlanc; from "12 Years a Slave", actress Lupita Nyong'o; musical guests The Fray.

12x7 - Meryl Streep; Joseph Gordon-Levitt; Jonny Lang

January 15, 2014

From "August Osage County", actress Meryl Streep; from "HitRECord on TV!", host Joseph Gordon-Levitt; musical guest Jonny Lang.

12x8 - Chris Pine; Kevin O'Leary; Gregory Porter

January 16, 2014

From "Jack Ryan: Shadow Recruit", actor Chris Pine; from "Shark Tank", participant Kevin O'Leary; musical guest Gregory Porter.

12x9 - LL Cool J; Chloe Bennet; Vampire Weekend

January 20, 2014

From "NCIS: Los Angeles", actor and rapper LL Cool J; from "Agents of S.H.I.E.L.D.", actress Chloe Bennet; musical guests Vampire Weekend.

12x10 - Greg Kinnear; Kenneth Branagh; Young the Giant

January 21, 2014

From "Rake", actor Greg Kinnear; from "Jack Ryan: Shadow Recruit", director and actor Kenneth Branagh; musical guests Young the Giant.

12x11 - Christina Ricci; Jake Johnson; Danny Brown

January 22, 2014

From "Lizzie Borden", actress Christina Ricci; from "New Girl", actor Jake Johnson; musical guest Danny Brown.

12x12 - Kim Kardashian; Sean Lowe & Catherine Giudici; Jason Derulo

January 23, 2014

From "Keeping Up with the Kardashians", reality star Kim Kardashian; from "The Bachelor: Sean and Catherine's Wedding", Sean Lowe & Catherine Giudici; musical guest Jason Derulo.

12x13 - Chris O'Donnell; Paul George; The Airborne Toxic Event

January 27, 2014

From "NCIS: Los Angeles", actor Chris O'Donnell; player for the NBA Indiana Pacers, Paul George; musical guests The Airborne Toxic Event.

12x14 - Morgan Freeman; Anna Faris; Mötley Crüe

January 28, 2014

Actor Morgan Freeman; from "Mom", actress Anna Faris; musical guests Mötley Crüe.

12x15 - Andy García; Norman Van Aken; Broken Bells

January 29, 2014

From "At Middleton", actor Andy García; chef Norman Van Aken; musical guests Broken Bells.

12x16 - Zac Efron; Alison Brie; Sara Bareilles

January 30, 2014

From "That Awkward Moment", actor Zac Efron; from "The Lego Movie", actress Alison Brie; musical guest Sara Bareilles.

12x17 - Sharon Osbourne; Shailene Woodley & Theo James; Zedd

February 3, 2014

Sharon Osbourne from "The Talk"; actors Shailene Woodley and Theo James ("Divergent"); Zedd performs.

12x18 - Barkhad Abdi, Dr. Oz, The Lone Bellow

February 4, 2014

Actor Barkhad Abdi ("Captain Phillips"); Dr. Mehmet Oz; The Lone Bellow performs.

12x19 - Ashton Kutcher, Sarah Paulson, The Head and the Heart

February 5, 2014

Actor Ashton Kutcher ("Two and a Half Men"); actress Sarah Paulson ("12 Years a Slave"); The Head and the Heart perform.

12x20 - Matt Damon; George Clooney; Bill Murray; Cate Blanchett; Bob Balaban

February 6, 2014

The cast of George Clooney's The Monuments Men

12x21 - Ethan Hawke, Julie Delpy, Joel Kinnaman, Eric Church

February 10, 2014

Actors Ethan Hawke & Julie Delpy; actor Joel Kinnaman; Eric Church performs.

12x22 - Richard Sherman & Malcolm Smith, Gary Oldman, †††

February 11, 2014

Seattle Seahawks Richard Sherman & Malcolm Smith; actor Gary Oldman; music from Crosses †††

12x23 - Nathan Fillion, Abbie Cornish, Naughty Boy & Sam Smith

February 12, 2014

Actor Nathan Fillion; actor Abbie Cornish; Naughty Boy and Sam Smith perform.

12x24 - Kevin Hart, Alex Pettyfer, Sage the Gemini

February 13, 2014

Actor Kevin Hart; actor Alex Pettyfer; Sage the Gemini performs.

12x25 - Will Arnett, Chrissy Teigen, Nina Adgal, Lily Aldridge, Silversun Pickups

February 17, 2014

Will Arnett; Sports Illustrated Swimsuit Issue Cover Models Nina Agdal, Lily Aldridge and Chrissy Teigen; Music from Silversun Pickups.

12x26 - Bill O'Reilly, Kit Harington, Phantogram

February 18, 2014

Author Bill O'Reilly; actor Kit Harington; Phantogram performs.

12x27 - Matthew McConaughey, June Squibb, Switchfoot

February 19, 2014

Actor Matthew McConaughey; actress June Squibb; Switchfoot performs.

12x28 - Jonah Hill, Willie & Korie Robertson, New Politics

February 20, 2014

Actor Jonah Hill; TV personalities Willie Robertson and Korie Robertson; New Politics performs.

12x29 - Liam Neeson, Dave Salmoni, Josh Groban

February 24, 2014

Actor Liam Neeson; animal expert Dave Salmoni; Josh Groban performs.

12x30 - Joel McHale, Ansel Elgort, Benmont Tench

February 25, 2014

Actor Joel McHale; actor Ansel Elgort; music from Benmont Tench.

12x31 - Ellen DeGeneres, Tom Ford, Sky Ferreira

February 26, 2014

TV show host Ellen DeGeneres; director Tom Ford; Sky Ferreira performs.

12x32 - Kerry Washington, Michael Strahan, Juicy J & Wiz Khalifa

February 27, 2014

Actress Kerry Washington; TV show host Michael Strahan; Juicy J and Wiz Khalifa perform.

12x33 - Rob Ford, Gonzo

March 3, 2014

Toronto Mayor Rob Ford; The Muppets' The Great Gonzo.

12x34 - Jane Lynch, Omar Epps, Fitz & the Tantrums

March 4, 2014

Actress Jane Lynch; actor Omar Epps; Musical guest Fitz & The Tantrums.

12x35 - Ricky Gervais, Kongos

March 5, 2014

Actor Ricky Gervais; Kongos performs.

12x36 - Aaron Paul, Bellamy Young, Jetta

March 6, 2014

Actor Aaron Paul; actress Bellamy Young; Music from Jetta.

12x37 - Seth Rogen, Snoop Dogg, White Denim

March 10, 2014

Jimmy Kimmel takes the show to Austin, Texas. Actor Seth Rogen ("Neighbors"), rapper-actor Snoop Dogg (1st Annual Wellness Retreat); musical guest White Denim.

12x38 - Rosario Dawson, Gov. Rick Perry, Aloe Blacc

March 11, 2014

Actress Rosario Dawson ("Cesar Chavez"); Gov. Rick Perry; Music from Aloe Blacc; Jimmie Vaughn sits in with the house band.

12x39 - Robert Duvall, Rachael Ray, Damon Albarn

March 12, 2014

Actor Robert Duvall ("A Night In Old Mexico"); celebrity chef Rachael Ray ("The Rachael Ray Show"); musical guest Damon Albarn; musical guest Johnny Winter will sit in with house band Cleto and the Cletones.

12x40 - Lady Gaga, Darby Stanchfield, The Preatures

March 13, 2014

Musical guest Lady Gaga; actress Darby Stanchfield ("Scandal"); musical guest The Preatures.

12x41 - Lil' Wayne, Willie Nelson, Los Lonely Boys

March 14, 2014

Rapper Lil Wayne; panelist and musical guest Willie Nelson; Los Lonely Boys sits in with Cleto and the Cletones.

12x42 - Uma Thurman, Jai Courtney, Amos Lee

March 17, 2014

Actress Uma Thurman; actor Jai Courtney; Amos Lee performs.

12x43 - Ashley Judd, Howie Mandel, Capital Cities

March 18, 2014

Actress Ashley Judd; TV host Howie Mandel; Sam Smith performs.

12x44 - Jeremy Piven, Zoe Kravitz, YG

March 19, 2014

Actor Jeremy Piven; actress Zoe Kravitz; YG performs.

12x45 - Don Cheadle, Tony Goldwyn, Enrique Iglesias

March 20, 2014

Actor Don Cheadle; actor Tony Goldwyn; Enrique Iglesias performs.

12x46 - Jennifer Connelly, Rohan Chand, Sharon Jones & the Dap-Kings

March 24, 2014

Actress Jennifer Connelly; actor Rohan Chand; Sharon Jones & the Dap-Kings perform.

12x47 - Nicole Kidman, Alyson Hannigan, Jerrod Niemann

March 25, 2014

Actress Nicole Kidman; actress Alyson Hannigan; Jerrod Niemann performs.

12x48 - Julia Louis-Dreyfus, Michael Pena, London Grammar

March 26, 2014

Actress Julia Louis-Dreyfus; actor Michael Peña; London Grammar performs.

12x49 - Jason Bateman, Katie Lowes, John Legend

March 27, 2014

Actor Jason Bateman; actress Katie Lowes; John Legend performs.

12x50 - Mindy Kaling, Jim Jefferies, Dan Croll

March 31, 2014

Actress Mindy Kaling; comic Jim Jefferies; Dan Croll performs.

12x51 - David Duchovny, Danai Gurira, Pete Davidson

April 1, 2014

12x52 - Bill Clinton, Manny Pacquiao

April 2, 2014

President Bill Clinton; Manny Pacquiao performs.