Season 12

January 8, 2014

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

January 9, 2014

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

January 13, 2014

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

January 14, 2014

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

January 15, 2014

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

January 16, 2014

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

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.

January 21, 2014

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

January 22, 2014

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

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.

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.

January 28, 2014

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

January 29, 2014

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

January 30, 2014

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

February 3, 2014

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

February 4, 2014

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

February 5, 2014

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

February 6, 2014

The cast of George Clooney's The Monuments Men

February 10, 2014

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

February 11, 2014

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

February 12, 2014

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

February 13, 2014

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

February 17, 2014

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

February 18, 2014

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

February 19, 2014

Actor Matthew McConaughey; actress June Squibb; Switchfoot performs.

February 20, 2014

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

February 24, 2014

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

February 25, 2014

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

February 26, 2014

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

February 27, 2014

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

March 3, 2014

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

March 4, 2014

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

March 5, 2014

Actor Ricky Gervais; Kongos performs.

March 6, 2014

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

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.

March 11, 2014

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

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.

March 13, 2014

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

March 14, 2014

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

March 17, 2014

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

March 18, 2014

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

March 19, 2014

Actor Jeremy Piven; actress Zoe Kravitz; YG performs.

March 20, 2014

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

March 24, 2014

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

March 25, 2014

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

March 26, 2014

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

March 27, 2014

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

March 31, 2014

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

April 1, 2014

April 2, 2014

President Bill Clinton; Manny Pacquiao performs.

April 3, 2014

Actress Emma Stone; actor Jeff Perry; Schoolboy Q performs.

April 10, 2014

Actor Seth MacFarlane; actor Paul Bettany; Sam Smith performs; the 2014 ESPYS host Drake.

April 17, 2014

"Scandal" creator Shonda Rhimes discusses the season three finale; secrets from the "Scandal" cast and a previously unseen blooper reel; Kimmel's Spanish-language spinoff, "Escandalo."

April 9, 2014

Model Kate Upton; actor Cole Hauser; Neon Trees performs.

April 10, 2014

Actor Seth MacFarlane; actor Paul Bettany; Sam Smith performs.

April 23, 2014

Actor Tim Allen; actress Ginnifer Goodwin; Foster the People perform.

April 24, 2014

Actress Julie Bowen; comic Dave Attell; Cut Copy performs.

April 23, 2014

Actor Tim Allen; actress Ginnifer Goodwin; Foster the People perform.

April 29, 2014

Actors Eric Stonestreet and Jesse Tyler Ferguson; TV host Robin Roberts.

April 28, 2014

Actress Jennifer Lopez; actress Elizabeth moss; Sleepy Man Banjo Boys perform.

May 29, 2014

Actors Eric Stonestreet and Jesse Tyler Ferguson; reporter Robin Roberts.

April 30, 2014

Comic Kathy Griffin; actor Tony Hale; Franz Ferdinand performs.

May 1, 2014

Actress Sandra Oh; "Science Bob" Pflugfelder; Boy George performs.

May 5, 2014

Actress Sally Field; actress Julia Roberts; Future Islands performs.

May 6, 2014

Actor Jon Hamm; actress Emma Roberts; Kid Ink performs with Travis Barker.

May 7, 2014

Musician Pharrell Williams is interviewed and performs.

May 15, 2014

Actress Shailene Woodley; actor Aasif Mandvi; Iggy Azalea performs.

May 16, 2014

Actor Nathan Lane; author Adam Carolla; Royal Blood performs.

May 15, 2014

Actress Shailene Woodley; actor Aasif Mandvi; Iggy Azalea performs.

May 14, 2014

May 19, 2014

TV host George Stephanopoulos; reality-TV star Andi Dorfman.

May 20, 2014

Actor Johnny Knoxville; animal trainer Dave Salmoni; Timeflies performs.

May 21, 2014

Actor Adam Sandler; actress Elle Fanning; Lykke Li performs.

May 22, 2014

Actress Patricia Heaton; actor T.J. Miller; Little Dragon performs.

June 5, 2014

Actor Martin Lawrence.

June 5, 2014

Scripps National Spelling Bee champions; rapper Curtis "50 Cent" Jackson; actress Jenny Slate; OneRepublic performs.

June 10, 2014

Rapper Curtis "50 Cent" Jackson; Jenny Slate ("Obvious Child"). Also: OneRepublic perform.

June 10, 2014

Actor Gerard Butler; actress Meagan Goode; Matisyahu performs.

June 12, 2014

Actor Robert Pattinson; actor Pablo Schreiber; Nico & Vinz perform.

June 16, 2014

Actress Lena Headey; Jungle performs.

June 17, 2014

Musicians Ludacris, Kesha, Josh Groban and Brad Paisley; Internet personality Michael Stevens; Brad Paisley performs.

June 19, 2014

Former boxer Mike Tyson; Jason Momoa ("Road to Paloma"). Also: Young Fathers perform.

June 23, 2014

2014 NBA Champions San Antonio Spurs’ Tony Parker, Eric Bana, Music from Linkin Park

June 24, 2014

Actress Roseanne Barr; actor Eric Dane; Tech N9NE performs.

June 25, 2014

Actor Gary Oldman; actor Nathan Fielder; Bleachers performs.

June 26, 2014

Actor Bob Newhart; actress Nicola Peltz; Spoon performs.

June 30, 2014

Actress Melissa McCarthy; actor Marc Maron; Röyksopp & Robyn perform.

July 1, 2014

Actor Dane Cook; actor Mark Duplass; Trey Songz performs.

July 2, 2014

Actress Susan Sarandon; actor Ramon Rodriguez; Robin Thicke performs; professional baseball player Yasiel Puig.

July 3, 2014

Actress Jessica Alba; actor Ben Falcone; Sia performs.

July 21, 2014

July 22, 2014

Actor John Stamos; comic Todd Glass; OK Go performs.

July 23, 2014

John Stamos ("My Man Is a Loser"); comedian Todd Glass. Also: OK Go perform.

July 24, 2014

Gordon Ramsay ("Hotel Hell"); Bobcat Goldthwait ("Willow Creek"). Also: Common performs.

July 25, 2014

Justin Theroux ("The Leftovers"); Angie Harmon ("Rizzoli & Isles"). Also: 5 Seconds of Summer perform.

July 29, 2014

Actor Daniel Radcliffe; actress Abigail Spencer; Kiesza performs.

July 30, 2014

Actor Eric McCormack; Self performs.

July 31, 2014

Actress Kerry Washington; musician Tom Petty; Tom Petty & the Heartbreakers perform.

August 4, 2014

Reality-TV star Kim Kardashian; actors Damon Wayans Jr. and Jake Johnson; Disclosure and Sam Smith perform.

August 5, 2014

Actor Ted Danson; actress Eva Green; Jake Owen performs.

August 6, 2014

Actress Chloë Grace Moretz; The Mighty Mighty Bosstones performs.

August 7, 2014

Actor Mickey Rourke; actress Jordana Brewster; Banks performs.

August 26, 2014

Actor Idris Elba; reality-TV personality Tim Gunn; The White Buffalo performs.

August 27, 2014

Actress Jennifer Aniston.

August 28, 2014

Actor Aaron Paul; Ed Sheeran performs.

August 29, 2014

Paolo Nutini performs.

September 2, 2014

Actress Eva Longoria; Wiz Khalifa performs.

September 3, 2014

Actress Gwyneth Paltrow; actor Terry Crews; Shawn Mendes performs.

September 4, 2014

Actress Taraji P. Henson; Hunter Hayes performs.

September 5, 2014

Sports analyst Terry Bradshaw; actors Mike Smith, John Paul Tremblay and Robb Wells; The Kooks perform.

September 8, 2014

Actress Lena Dunham; actor Ben Schwartz.

September 9, 2014

Actor Bill Hader; director Richard Linklater; Jhene Aiko performs.

September 10, 2014

TV host Queen Latifah; stock car racing driver Dale Earnhardt Jr.

September 11, 2014

Actor Morgan Freeman; reality-TV personality Julianne Hough.

September 15, 2014

Actress Jane Fonda; actor Ike Barinholtz; Mastodon performs.

September 16, 2014

Actors Keegan-Michael Key and Jordan Peele; journalist David Muir; Fall Out Boy performs.

September 17, 2014

Actor Ty Burrell; TV personality Len Goodman; Paolo Nutini performs.

September 18, 2014

Actress Kaley Cuoco; actor Anthony Anderson; Bastille performs.

September 22, 2014

Actress Courteney Cox; actor John Cho; Jason Aldean performs.

September 23, 2014

Actress Viola Davis; TV host Anthony Bourdain; Tove Lo performs.

September 24, 2014

Actor Patrick Dempsey; author Lara Spencer; Young Jeezy performs.

September 25, 2014

Actor Denzel Washington; actress Darby Stanchfield; The Script performs.

September 29, 2014

Actress Jennifer Love Hewitt; actor Clark Gregg; Clean Bandit performs.

September 30, 2014

Actor Martin Short; animal trainer Dave Salmoni; Steve Aoki performs with Waka Flocka Flame and Travis Barker.

October 1, 2014

Martin Short, Animal Trainer Dave Salmoni, Music from Steve Aoki Feat. Waka Flocka Flame and Travis Barker.

October 2, 2014

Actress Ellen Pompeo; actor Norman Reedus; Disclosure performs with Mary J. Blige.

October 6, 2014

Ellen Pompeo, Norman Reedus, Music from Disclosure feat. Mary J. Blige.

October 6, 2014

Dax Shepard, Karen Gillan, Music from Rixton.

October 8, 2014

Actress Kyra Sedgwick; actor Jon Bernthal; Dirty Heads performs.

October 8, 2014

Kyra Sedgwick, Jon Bernthal, Music from Dirty Heads.

October 13, 2014

LL Cool J, Michael Peña, Music from Tinashe Feat. Schoolboy Q.

October 13, 2014

Shia LaBeouf, Michelle Monaghan, Music from T.I.

October 14, 2014

Adam Carolla, Cristela Alonzo, Music from Bob Seger.

October 15, 2014

Selena Gomez, Chris O’Dowd, Music from Kasabian.

October 27, 2014

"Shark Tank" pitch results.

October 20, 2014

Actor Ice Cube; "Science Bob" Pflugfelder; Bush performs.

October 21, 2014

Actor Bill Murray; actors Jack Black and Kyle Gass.

October 27, 2014

Actress Melissa McCarthy; actor Frank Grillo; Billy Idol performs; "Shark Tank" pitch results.

October 23, 2014

Taylor Swift, Alfred Enoch, Music from Taylor Swift.

October 29, 2014

Actor Will Arnett; actress Lisa Kudrow; Lady Antebellum performs.

October 30, 2014

Actor Scott Foley; Smokey Robinson, Aloe Blacc and JC Chasez perform.

October 31, 2014

Halloween costume pageant; actor Andy Samberg; actress Rosie Perez; The Flaming Lips perform.

November 3, 2014

Scott Foley, music from Aloe Blacc.

October 31, 2014

Halloween costume pageant; actor Andy Samberg; actress Rosie Perez; Slipknot performs.

November 5, 2014

Kimmel appears simultaneously in Los Angeles and Nashville using hologram technology.

November 6, 2014

Actress Geena Davis; Cobra Starship performs with Icona Pop.

November 11, 2014

Actor Christoph Waltz; actress Aubrey Plaza.

November 12, 2014

Actor Mike Myers; actress Gugu Mbatha-Raw; Tears for Fears performs.

November 13, 2014

Actor Jim Carrey; actress Bellamy Young; Oran "Juice" Jones performs.

November 18, 2014

People's Sexiest Man Alive cover reveal; actor Jason Bateman; actress Courtney Love.

November 19, 2014

Actor Jamie Foxx; actress Tracee Ellis Ross; The New Basement Tapes perform.

November 20, 2014

Musical group One Direction; actor Tom Verica; Jessie J performs.

November 24, 2014

Actress Jennifer Aniston; actor Ken Jeong.

November 25, 2014

Actor Chris Pine; actress Evangeline Lilly; Pitbull and Ne-Yo perform.

November 26, 2014

Actress Mindy Kaling; UFC Women's Bantamweight champion Ronda Rousey; Rick Ross performs.

December 1, 2014

Actor Don Rickles; NASCAR champion Kevin Harvick; Chase Rice performs.

December 2, 2014

Actor Ethan Hawke; actor Timothy Spall; Walk the Moon performs.

December 3, 2014

Actress Sofia Vergara; actor J.K. Simmons.

December 4, 2014

TV host Ryan Seacrest; actress Rebecca Romijn; Vintage Trouble performs.

December 8, 2014

Actor Aaron Paul; actress Krysten Ritter; Bobby Shmurda performs.

December 9, 2014

Sports broadcasters Chris Fowler and Kirk Herbstreit; Priority performs.

December 10, 2014

Actress Marisa Tomei; Smashing Pumpkins perform.

December 11, 2014

Musician Blake Shelton; actress Laura Dern.

December 15, 2014

Actress Emily Blunt; actor Lee Pace; Alt-J performs.

December 16, 2014

Actress Tracey Ullman; Garth Brooks performs.

December 17, 2014

Actor Michael Keaton; TV host Megyn Kelly; George Ezra performs.

December 18, 2014

Comic Mel Brooks; actress Christine Baranski; Jenny Lewis performs.