Jessica Chastain, Patricia Arquette, Childish Gambino
Kaley Cuoco-Sweeting, Omar Epps, Steel Panther
Johnny Depp, Marion Cotillard, Kandace Springs
Danny DeVito, Abbi Jacobson, Ilana Glazer, Bad Suns
Eric Stonestreet, Stephen Amell, Logic
Ewan McGregor, Lea Michele, Tess Henley
Edward Norton, Al Michaels, The Decemberists
Channing Tatum, J.J. Watt, ZZ Top
Kevin Costner, Eddie Redmayne, Jamie Cullum
David Beckham, Elle Macpherson, Vance Joy
Kerry Washington, Dave Salmoni, Ne-Yo
Guests Rob Gronkowski, Eva Longoria. Weezer and ZZ Top perform as WeeZ Top on the inaugural "Mash Up Mondays"
Mila Kunis, Bob Odenkirk, Charli XCX
Lauren Cohan, Interview and Music from Jeff Bridges
Magic Johnson, Scott Foley, Magic!
Bill O'Reilly, Kelly Osbourne, Morris Day & The Time with Haim
Anna Faris, Jeff Van Gundy & Mark Jackson, Annie Lennox
David Spade, Randall Park, The Band Perry
Keira Knightley, Tony Goldwyn, Incubus
Benedict Cumberbatch, Stana Katic, Chris Soules, Aloe Blacc & Blackstreet
Kristen Bell, Chris Elliott, Big Sean
Neil Patrick Harris, Gillian Jacobs, Rascal Flatts
Kelly Ripa, Joshua Malina, Gorgon City feat. Jennifer Hudson
Kobe Bryant, Chrissy Teigen, Kenny G & Warren G
Will Smith, Elizabeth Henstridge, Sam Hunt
Viola Davis, Richard Madden, Common
Starring Bridgit Mendler (NBC's Undateable); comedian Beth Stelling and Chef Gordon Ramsay who tested Jimmy's palate by giving him a blind taste test
Vince Vaughn, Mike Tyson
Naomi Watts, Reggie Miller, Carly Rae Jepsen
Bette Midler, the next Bachelorette, Afghan Whigs
Jennifer Lopez, Keith Urban, Harry Connick Jr., Ryan Seacrest (American Idol (2002)); Eric André (Man Seeking Woman (2015)); Keith Urban performs
Liam Neeson, Octavia Spencer, AWOLNATION
President Barack Obama; Sean Penn (The Gunman (2015)). Also: "Earth Wind and Fire" perform
Kevin Hart, Brad Paisley
Julia Louis-Dreyfus, Robert Rodriguez, Spoon
Tony Romo, James Bay
Bill Murray, The cast of The Walking Dead
Kanye West, Willie Nelson
Comic Kathy Griffin; sports broadcasters Chris Fowler and Kirk Herbstreit; Priory performs
Zooey Deschanel, Guillermo Diaz, Charlie Wilson
Vin Diesel, Music from Van Halen
Actor Michael Keaton; TV host Megyn Kelly; George Ezra performs
Comic Mel Brooks; actress Christine Baranski; Jenny Lewis performs
Actress Anne Hathaway; reality-TV star Chris Soules; Heart performs
Actor Matt LeBlanc; actress Hayley Atwell; chef Jamie Oliver
TV-show host Bill Maher; actor Nick Kroll; The Lone Bellow performs
Actor Joaquin Phoenix; comic Larry Wilmore; Frankie Ballard performs
Actress Jessica Chastain; actress Patricia Arquette; Childish Gambino performs
Actress Kaley Cuoco-Sweeting; actor Omar Epps; Steel Panther performs
Actor Johnny Depp; actress Marion Cotillard; Kandace Springs performs
Actresses Abbi Jacobson and Ilana Glazer; Bad Suns perform
Actor Eric Stonestreet; actor Stephen Amell
Actor Ewan McGregor; actress Lea Michele; Tess Henley performs
Actor Edward Norton; sportscaster Al Michaels; The Decemberists perform
Actor Channing Tatum; professional football player J.J. Watt; ZZ Top performs
Actor Kevin Costner; actor Eddie Redmayne; Jamie Cullum performs
Former professional soccer player David Beckham; model Elle Macpherson; Vance Joy performs
Actress Kerry Washington; animal handler Dave Salmoni; Ne-Yo performs
TV host Bill O'Reilly; TV personality Kelly Osbourne; Mashup Monday features a performance from "Morris Day and the HAIM" (Morris Day and The Time and HAIM)
Actress Anna Faris; sportscasters Jeff Van Gundy and Mark Jackson; Annie Lennox performs
Sam Smith performs
Actress Keira Knightley; Incubus performs
Mashup Monday features a performance from "Aloe Blaccstreet" (Aloe Blacc and Blackstreet)
Actress Kristen Bell; actor Chris Elliott; Big Sean performs
Actor Neil Patrick Harris; actress Gillian Jacobs; Rascal Flatts perform
TV host Kelly Ripa; actor Joshua Malina; Gorgon City performs with Jennifer Hudson
A post-Oscar celebration; actor John Travolta
Professional basketball player Kobe Bryant
Actor Will Forte; actress Bella Thorne; Prince Royce performs
Actor Will Forte; actress Elizabeth Henstridge; Sam Hunt performs
Actress Viola Davis; actor Richard Madden
Actress Cate Blanchett; actor Ryan Phillippe; Joywave performs
Chef Gordon Ramsay; actress Bridgit Mendler; comic Beth Stelling
Actor Vince Vaughn; retired professional boxer Mike Tyson; Drew Holcomb and The Neighbors perform
Actress Naomi Watts; Carly Rae Jepsen performs
Actress Bette Midler; the latest woman to be featured on "The Bachelorette"; The Afghan Whigs perform
"American Idol" judges Jennifer Lopez, Keith Urban and Harry Connick Jr. and host Ryan Seacrest; actor Eric André; Keith Urban performs
Actor Liam Neeson; actress Octavia Spencer; AWOLNATION performs
Actor Sean Penn; Earth, Wind & Fire performs
Actor Kevin Hart; Brad Paisley performs
Actress Julia Louis- Dreyfus; filmmaker Robert Rodriguez; Spoon performs
Actor Bill Murray; "The Walking Dead" cast members; The Weeknd performs
Singer Willie Nelson
Clinton Foundation Vice Chair Chelsea Clinton; actor Adam Carolla; Zac Brown Band performs
Actress Maisie Williams; Saint Motel performs
Actor Matthew Perry; professional wrestler John Cena; For King & Country performs
Actress Zooey Deschanel; actor Guillermo Diaz; Charlie Wilson performs
Actor Vin Diesel; Van Halen performs
Actor Kurt Russell; comic Jeff Ross; Van Halen performs
Actor Dwayne Johnson; singer Rihanna; Death Cab for Cutie performs
Actor Jason Statham; Brian Wilson performs
Actors Robert Downey Jr., Chris Hemsworth, Mark Ruffalo, Chris Evans, Scarlett Johansson and Jeremy Renner ("Avengers: Age of Ultron")
Actress Cobie Smulders; barbecue chef Aaron Franklin; Chic performs
Actor Tim Allen; Drew Holcomb and The Neighbors performs
Actress Juliette Lewis; Jamie Foxx performs
Actor John Stamos; actor Michael B. Jordan; Matt & Kim perform
Actress Courteney Cox; chef Steve Martorano; Alabama Shakes perform
Dr. Phil McGraw; professional boxer Manny Pacquiao; Chet Faker performs
Actors Anthony Anderson, Laurence Fishburne and Tracee Ellis Ross; Earth, Wind & Fire perform with Chicago
Actor Kevin Spacey; actor Ioan Gruffudd; Stromae performs
Tim McGraw performs; actress Patricia Heaton
Actor Billy Crystal; animal handler Dave Salmoni; Modest Mouse performs
Reality-TV star Kim Kardashian West; actor Michael Sheen; YelaWolf performs with Travis Barker
TV host Ryan Seacrest; actress Brittany Snow; a Mash Up Monday performance with "REO SpeedDragons" (Imagine Dragons and REO Speedwagon)
Actress Julie Bowen; actor Adam Devine; Imagine Dragons perform
Musician Adam Levine; actor Nicholas Hoult; Maroon 5 performs
Actress Hailee Steinfeld; Brandon Flowers performs
Actress Elizabeth Banks; comic Marc Maron; Earl Sweatshirt featuring BadBadNotGood performs
Comic Amy Schumer; singer Chris "Ludacris" Bridges; José González performs
Actor Paul Giamatti; author Bob Pflugfelder
Mariah Carey performs; actress Alexandra Daddario
Actor George Clooney; "The Bachelorette" castoff
Actor Ray Liotta; Zedd performs
Actress Jennifer Connelly; director Judd Apatow; Twenty One Pilots perform
Actor Jeremy Piven; author Adam Carolla; Hozier performs
Scripp's National Spelling Bee champions Vanya Shivashankar and Gokul Venkatachalam; Hiatus Kiyote performs
Actor Joseph Gordon-Levitt; actress Emmanuelle Chriqui; Wiz Khalifa performs
Actor Chris Pratt; actress Abby Elliott; Fetty Wap performs
Actor Kit Harington; TV host Chris Gethard; Dwight Yoakam performs
Actress Zoe Saldana; Tyler the Creator performs
Actress Viola Davis; actor Adam Scott; Wale performs
Actor Bill Hader; actor Shameik Moore
Actor Jack Black; actor Jeffrey Tambor; Fifth Harmony and Kid Ink perform
NBA Finals MVP Andre Iguodala; comedian Chris Tucker; Mark Feuerstein ("Larry Gaye: Renegade Male Flight Attendant"). Also: Robert DeLong performs
Jon Hamm ("Minions"); Lizzy Caplan ("Masters of Sex"); comedian Jesse Elias. Also: Sheila E. sits in with Cleto and the Cletones
Comedian Wanda Sykes; Jeffrey Dean Morgan ("Extant"). Also: A Thousand Horses perform
Jada Pinkett Smith ("Magic Mike XXL"); Jai Courtney ("Terminator Genisys"). Also: Nate Ruess performs
Emilia Clarke ("Terminator Genisys"); Vanessa Bayer ("Trainwreck"). Also: Miguel performs
Comedian Kathy Griffin; Rob Corddry ("Ballers"). Also: Everclear perform
Liev Schreiber ("Ray Donovan"); mixed martial artist Ronda Rousey. Also: Vince Staples performs
Andy Samberg ("7 Days in Hell"); quarterback Russell Wilson. Also: Butch Walker performs
Charlize Theron ("Dark Places"); Nat Wolff ("Paper Towns"). Also: Tori Kelly performs
Denis Leary ("Sex&Drugs&Rock&Roll"); soccer player Alex Morgan. Also: Big Talk perform
Ed Helms ("Vacation"); Brie Larson ("Trainwreck"). Also: Joss Stone performs
Colin Farrell ("True Detective"). Also: Meghan Trainor performs
Owen Wilson ("No Escape"); Kaitlyn Bristowe ("The Bachelorette"). Also: Juanes performs
Armie Hammer ("The Man From U.N.C
Christina Applegate ("Vacation"); Rick Springfield ("Ricki and the Flash"). Also: Tyler, the Creator performs
Jason Bateman, Nicole Richie
Actress Halle Berry; Josh Groban performs
Actor Johnny Knoxville; professional basketball player Steph Curry; Kelly Clarkson performs
Actress Queen Latifah; tennis legend John McEnroe; Mumford & Sons perform
Actor Topher Grace; actress Lily Tomlin
Actress Sofía Vergara; journalist David Muir; Kacey Musgraves performs
Actor John Stamos; journalist Jake Tapper; Cold War Kids perform
Actor Tobey Maguire; NASCAR driver Dale Earnhardt Jr.; Kip Moore performs
Actor David Spade; professional basketball player Russell Westbrook; A$AP Rocky performs