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, 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.L.E."); Natasha Leggero ("Another Period").

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.