Jimmy Kimmel

Channing Tatum, Simone Biles, Magic Mike Dancers

Britney Spears, LeBron James, Aly Raisman

Eddie Murphy, Alessia Cara

Tom Hanks, Violet Ogea

Celine Dion, Ryan Lochte, Cheryl Burke

Michelle Obama, Stephen Curry, Usher

Taylor Lautner, Tatyana McFadden, Bon Jovi

Khloe Kardashian, the Band Perry, guest co-host Kevin Hart

Tyler Perry, Lewis Hamilton, Maren Morris

Rachel McAdams, Justin Hartley, Kym Douglas

Garth Brooks, Robin Roberts

Zooey Deschanel

Vince Vaughn, Priyanka Chopra, Joseph

Anna Kendrick, Martha Stewart, Snoop Dogg, Donald Glover

Adam Levine/Julianne Moore/Maroon 5

Day 3 of 12 Days, Mariah Carey, Leah Remini, Brilliant Brielle

Day 4 of 12 Days, Helen Mirren, James Marsden, The Weeknd

Day 5 of 12 Days, Tracee Ellis Ross, Carrie Fisher, The Revivalists

Day 6 of 12 Days, Jennifer Aniston, Derek Hough

Day 7 of 12 Days, T.J. Miller, Chrissy Metz, Kane Brown

Day 8 of 12 Days, Blake Shelton, Diego Luna

Day 9 of 12 Days, Justin Bieber, Felicity Jones, the cast of 'Fuller House'

Day 10 of 12 Days, Amy Schumer, Milo Ventimiglia

Day 11 of 12 Days, Natalie Portman, Miranda Lambert

Day 12 of 12 Days, Will Smith, Macklemore

Ryan Gosling, Olivia Munn

Ben Affleck, Ruby Rose, Shaping Sound Dance Company

Annette Bening/Ken Jeong/Stephen 'tWitch' Boss

Kristen Bell, Dax Shepard, Anderson .Paak

Drew Barrymore

Sofia Vergara

Nick Viall, Charlie Day, Ed Sheeran

Kris Jenner

Jennifer Lopez

Demi Lovato

Ryan Seacrest

Episode 129

Ellen Celebrates the 20th Anniversary of the Iconic Puppy Episode on Her Sitcom, Ellen

Matt Lauer

Katy Perry

Julia Roberts, Richard Curtis

Ellen presents her favorite duos from Season 14, featuring Michelle Obama, Ariana Grande, Britney Sp