From "Cougar Town", actress Courteney Cox; “The Bachelor” Juan Pablo Galavis; musical guest Johnathan Rice
Actress Amy Adams; actress Margot Robbie; musical guests Xolie Morra & The Strange Kind
From "Modern Family", actress Sofia Vergara; actress Emmy Rossum; musical guest Yuna
Actress Kristen Wiig; comedian Nick Kroll; musical guests Lord Huron
From "Jack Ryan: Shadow Recruit", actor Kevin Costner; from "American Idol", judge Harry Connick Jr.; musical guest Michael Kiwanuka
From "Episodes", actor Matt LeBlanc; from "12 Years a Slave", actress Lupita Nyong'o; musical guests The Fray
From "August Osage County", actress Meryl Streep; from "HitRECord on TV!", host Joseph Gordon-Levitt; musical guest Jonny Lang
From "Jack Ryan: Shadow Recruit", actor Chris Pine; from "Shark Tank", participant Kevin O'Leary; musical guest Gregory Porter
From "NCIS: Los Angeles", actor and rapper LL Cool J; from "Agents of S.H.I
From "Rake", actor Greg Kinnear; from "Jack Ryan: Shadow Recruit", director and actor Kenneth Branagh; musical guests Young the Giant
From "Lizzie Borden", actress Christina Ricci; from "New Girl", actor Jake Johnson; musical guest Danny Brown
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
From "NCIS: Los Angeles", actor Chris O'Donnell; player for the NBA Indiana Pacers, Paul George; musical guests The Airborne Toxic Event
Actor Morgan Freeman; from "Mom", actress Anna Faris; musical guests Mötley Crüe
From "At Middleton", actor Andy García; chef Norman Van Aken; musical guests Broken Bells
From "That Awkward Moment", actor Zac Efron; from "The Lego Movie", actress Alison Brie; musical guest Sara Bareilles
Sharon Osbourne from "The Talk"; actors Shailene Woodley and Theo James ("Divergent"); Zedd performs
Actor Barkhad Abdi ("Captain Phillips"); Dr. Mehmet Oz; The Lone Bellow performs
Actor Ashton Kutcher ("Two and a Half Men"); actress Sarah Paulson ("12 Years a Slave"); The Head and the Heart perform
The cast of George Clooney's The Monuments Men
Actors Ethan Hawke & Julie Delpy; actor Joel Kinnaman; Eric Church performs
Seattle Seahawks Richard Sherman & Malcolm Smith; actor Gary Oldman; music from Crosses †††
Actor Nathan Fillion; actor Abbie Cornish; Naughty Boy and Sam Smith perform
Actor Kevin Hart; actor Alex Pettyfer; Sage the Gemini performs
Will Arnett; Sports Illustrated Swimsuit Issue Cover Models Nina Agdal, Lily Aldridge and Chrissy Teigen; Music from Silversun Pickups
Author Bill O'Reilly; actor Kit Harington; Phantogram performs
Actor Matthew McConaughey; actress June Squibb; Switchfoot performs
Actor Jonah Hill; TV personalities Willie Robertson and Korie Robertson; New Politics performs
Actor Liam Neeson; animal expert Dave Salmoni; Josh Groban performs
Actor Joel McHale; actor Ansel Elgort; music from Benmont Tench
TV show host Ellen DeGeneres; director Tom Ford; Sky Ferreira performs
Actress Kerry Washington; TV show host Michael Strahan; Juicy J and Wiz Khalifa perform
Toronto Mayor Rob Ford; The Muppets' The Great Gonzo
Actress Jane Lynch; actor Omar Epps; Musical guest Fitz & The Tantrums
Actor Ricky Gervais; Kongos performs
Actor Aaron Paul; actress Bellamy Young; Music from Jetta
Jimmy Kimmel takes the show to Austin, Texas. Actor Seth Rogen ("Neighbors"), rapper-actor Snoop Dogg (1st Annual Wellness Retreat); musical guest White Denim
Actress Rosario Dawson ("Cesar Chavez"); Gov. Rick Perry; Music from Aloe Blacc; Jimmie Vaughn sits in with the house band
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
Musical guest Lady Gaga; actress Darby Stanchfield ("Scandal"); musical guest The Preatures
Rapper Lil Wayne; panelist and musical guest Willie Nelson; Los Lonely Boys sits in with Cleto and the Cletones
Actress Uma Thurman; actor Jai Courtney; Amos Lee performs
Actress Ashley Judd; TV host Howie Mandel; Sam Smith performs
Actor Jeremy Piven; actress Zoe Kravitz; YG performs
Actor Don Cheadle; actor Tony Goldwyn; Enrique Iglesias performs
Actress Jennifer Connelly; actor Rohan Chand; Sharon Jones & the Dap-Kings perform
Actress Nicole Kidman; actress Alyson Hannigan; Jerrod Niemann performs
Actress Julia Louis-Dreyfus; actor Michael Peña; London Grammar performs
Actor Jason Bateman; actress Katie Lowes; John Legend performs
Actress Mindy Kaling; comic Jim Jefferies; Dan Croll performs
President Bill Clinton; Manny Pacquiao performs
Actress Emma Stone; actor Jeff Perry; Schoolboy Q performs
Actor Seth MacFarlane; actor Paul Bettany; Sam Smith performs; the 2014 ESPYS host Drake
"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."
Model Kate Upton; actor Cole Hauser; Neon Trees performs
Actor Seth MacFarlane; actor Paul Bettany; Sam Smith performs
Actor Tim Allen; actress Ginnifer Goodwin; Foster the People perform
Actress Julie Bowen; comic Dave Attell; Cut Copy performs
Actor Tim Allen; actress Ginnifer Goodwin; Foster the People perform
Actors Eric Stonestreet and Jesse Tyler Ferguson; TV host Robin Roberts
Actress Jennifer Lopez; actress Elizabeth moss; Sleepy Man Banjo Boys perform
Actors Eric Stonestreet and Jesse Tyler Ferguson; reporter Robin Roberts
Comic Kathy Griffin; actor Tony Hale; Franz Ferdinand performs
Actress Sandra Oh; "Science Bob" Pflugfelder; Boy George performs
Actress Sally Field; actress Julia Roberts; Future Islands performs
Actor Jon Hamm; actress Emma Roberts; Kid Ink performs with Travis Barker
Musician Pharrell Williams is interviewed and performs
Actress Shailene Woodley; actor Aasif Mandvi; Iggy Azalea performs
Actor Nathan Lane; author Adam Carolla; Royal Blood performs
Actress Shailene Woodley; actor Aasif Mandvi; Iggy Azalea performs
TV host George Stephanopoulos; reality-TV star Andi Dorfman
Actor Johnny Knoxville; animal trainer Dave Salmoni; Timeflies performs
Actor Adam Sandler; actress Elle Fanning; Lykke Li performs
Actress Patricia Heaton; actor T.J. Miller; Little Dragon performs
Actor Martin Lawrence
Scripps National Spelling Bee champions; rapper Curtis "50 Cent" Jackson; actress Jenny Slate; OneRepublic performs
Rapper Curtis "50 Cent" Jackson; Jenny Slate ("Obvious Child"). Also: OneRepublic perform
Actor Gerard Butler; actress Meagan Goode; Matisyahu performs
Actor Robert Pattinson; actor Pablo Schreiber; Nico & Vinz perform
Actress Lena Headey; Jungle performs
Musicians Ludacris, Kesha, Josh Groban and Brad Paisley; Internet personality Michael Stevens; Brad Paisley performs
Former boxer Mike Tyson; Jason Momoa ("Road to Paloma"). Also: Young Fathers perform
2014 NBA Champions San Antonio Spurs’ Tony Parker, Eric Bana, Music from Linkin Park
Actress Roseanne Barr; actor Eric Dane; Tech N9NE performs
Actor Gary Oldman; actor Nathan Fielder; Bleachers performs
Actor Bob Newhart; actress Nicola Peltz; Spoon performs
Actress Melissa McCarthy; actor Marc Maron; Röyksopp & Robyn perform
Actor Dane Cook; actor Mark Duplass; Trey Songz performs
Actress Susan Sarandon; actor Ramon Rodriguez; Robin Thicke performs; professional baseball player Yasiel Puig
Actress Jessica Alba; actor Ben Falcone; Sia performs
Jessica Alba ("Sin City: A Dame to Kill For"); Ben Falcone ("Tammy"). Also: Sia performs
Actor John Stamos; comic Todd Glass; OK Go performs
John Stamos ("My Man Is a Loser"); comedian Todd Glass. Also: OK Go perform
Gordon Ramsay ("Hotel Hell"); Bobcat Goldthwait ("Willow Creek"). Also: Common performs
Justin Theroux ("The Leftovers"); Angie Harmon ("Rizzoli & Isles"). Also: 5 Seconds of Summer perform
Actor Daniel Radcliffe; actress Abigail Spencer; Kiesza performs
Actor Eric McCormack; Self performs
Actress Kerry Washington; musician Tom Petty; Tom Petty & the Heartbreakers perform
Reality-TV star Kim Kardashian; actors Damon Wayans Jr. and Jake Johnson; Disclosure and Sam Smith perform
Actor Ted Danson; actress Eva Green; Jake Owen performs
Actress Chloë Grace Moretz; The Mighty Mighty Bosstones performs
Actor Mickey Rourke; actress Jordana Brewster; Banks performs
Actor Idris Elba; reality-TV personality Tim Gunn; The White Buffalo performs
Actress Jennifer Aniston
Actor Aaron Paul; Ed Sheeran performs
Paolo Nutini performs
Actress Eva Longoria; Wiz Khalifa performs
Actress Gwyneth Paltrow; actor Terry Crews; Shawn Mendes performs
Actress Taraji P. Henson; Hunter Hayes performs
Sports analyst Terry Bradshaw; actors Mike Smith, John Paul Tremblay and Robb Wells; The Kooks perform
Actress Lena Dunham; actor Ben Schwartz
Actor Bill Hader; director Richard Linklater; Jhene Aiko performs
TV host Queen Latifah; stock car racing driver Dale Earnhardt Jr
Actor Morgan Freeman; reality-TV personality Julianne Hough
Actress Jane Fonda; actor Ike Barinholtz; Mastodon performs
Actors Keegan-Michael Key and Jordan Peele; journalist David Muir; Fall Out Boy performs
Actor Ty Burrell; TV personality Len Goodman; Paolo Nutini performs
Actress Kaley Cuoco; actor Anthony Anderson; Bastille performs
Actress Courteney Cox; actor John Cho; Jason Aldean performs
Actress Viola Davis; TV host Anthony Bourdain; Tove Lo performs
Actor Patrick Dempsey; author Lara Spencer; Young Jeezy performs
Actor Denzel Washington; actress Darby Stanchfield; The Script performs
Actress Jennifer Love Hewitt; actor Clark Gregg; Clean Bandit performs
Actor Martin Short; animal trainer Dave Salmoni; Steve Aoki performs with Waka Flocka Flame and Travis Barker
Martin Short, Animal Trainer Dave Salmoni, Music from Steve Aoki Feat. Waka Flocka Flame and Travis Barker
Actress Ellen Pompeo; actor Norman Reedus; Disclosure performs with Mary J. Blige
Ellen Pompeo, Norman Reedus, Music from Disclosure feat. Mary J. Blige
Dax Shepard, Karen Gillan, Music from Rixton
Actress Kyra Sedgwick; actor Jon Bernthal; Dirty Heads performs
Kyra Sedgwick, Jon Bernthal, Music from Dirty Heads
LL Cool J, Michael Peña, Music from Tinashe Feat. Schoolboy Q
Shia LaBeouf, Michelle Monaghan, Music from T.I
Adam Carolla, Cristela Alonzo, Music from Bob Seger
Selena Gomez, Chris O’Dowd, Music from Kasabian
"Shark Tank" pitch results
Actor Ice Cube; "Science Bob" Pflugfelder; Bush performs
Actor Bill Murray; actors Jack Black and Kyle Gass
Actress Melissa McCarthy; actor Frank Grillo; Billy Idol performs; "Shark Tank" pitch results
Taylor Swift, Alfred Enoch, Music from Taylor Swift
Actor Will Arnett; actress Lisa Kudrow; Lady Antebellum performs
Actor Scott Foley; Smokey Robinson, Aloe Blacc and JC Chasez perform
Halloween costume pageant; actor Andy Samberg; actress Rosie Perez; The Flaming Lips perform
Scott Foley, music from Aloe Blacc
Halloween costume pageant; actor Andy Samberg; actress Rosie Perez; Slipknot performs
Kimmel appears simultaneously in Los Angeles and Nashville using hologram technology
Actress Geena Davis; Cobra Starship performs with Icona Pop
Actor Christoph Waltz; actress Aubrey Plaza
Actor Mike Myers; actress Gugu Mbatha-Raw; Tears for Fears performs
Actor Jim Carrey; actress Bellamy Young; Oran "Juice" Jones performs
People's Sexiest Man Alive cover reveal; actor Jason Bateman; actress Courtney Love
Actor Jamie Foxx; actress Tracee Ellis Ross; The New Basement Tapes perform
Musical group One Direction; actor Tom Verica; Jessie J performs
Actress Jennifer Aniston; actor Ken Jeong
Actor Chris Pine; actress Evangeline Lilly; Pitbull and Ne-Yo perform
Actress Mindy Kaling; UFC Women's Bantamweight champion Ronda Rousey; Rick Ross performs
Actor Don Rickles; NASCAR champion Kevin Harvick; Chase Rice performs
Actor Ethan Hawke; actor Timothy Spall; Walk the Moon performs
Actress Sofia Vergara; actor J.K. Simmons
TV host Ryan Seacrest; actress Rebecca Romijn; Vintage Trouble performs
Actor Aaron Paul; actress Krysten Ritter; Bobby Shmurda performs
Sports broadcasters Chris Fowler and Kirk Herbstreit; Priority performs
Actress Marisa Tomei; Smashing Pumpkins perform
Musician Blake Shelton; actress Laura Dern
Actress Emily Blunt; actor Lee Pace; Alt-J performs
Actress Tracey Ullman; Garth Brooks performs
Actor Michael Keaton; TV host Megyn Kelly; George Ezra performs
Comic Mel Brooks; actress Christine Baranski; Jenny Lewis performs