Actress Meryl Streep; actor Jason Ritter; Blake Shelton performs.

Actor Jamie Dornan; actress Danai Gurira; Russell Dickerson performs.

Actor Milo Ventimiglia; actress Heather Graham; Kane Brown performs.

Actor Oscar Isaac; Olympic snowboarder Red Gerard; chef Massimo Bottura.

Retired professional basketball player Charles Barkley; actress Chloe Bennet; Monica performs.

Actress Natalie Portman; professional basketball player Kyrie Irving.

Actress Allison Janney; actress Maisie Williams; Kent Jones performs.

Actor Jason Bateman; chef David Chang; X Ambassadors perform.

Actress Oprah Winfrey; actor Timothee Chalamet; Andra Day and Common perform.

Actress Saoirse Ronan; actor Kyle Chandler; Joey Dosik performs.

Actor John Cena; Rep. Joe Kennedy III (D-Mass.); Rozzi performs.

Actors Don Cheadle, Benedict Cumberbatch, Elizabeth Olsen and Winston Duke; Morgan Wallen and Florida Georgia Line perform.

Actress Carol Burnett; journalist Jake Tapper; Keith Urban performs.

Singer Miley Cyrus; Sen. Elizabeth Warren (D-Mass.).

Actor Mike Myers; actress Zazie Beetz; Sugarland performs.

Actor Bill Hader; Sen. Cory Booker (D-N.J.); Rae Sremmurd performs.

Actress Melissa McCarthy; singer Luke Bryan; professional baseball player Cody Bellinger.

Actor Woody Harrelson; actress Sara Gilbert; Bazzi performs.

Actor Alden Ehrenreich; actor Ben Falcone; 2 Chainz performs with YG and Offset.

Actor Donald Glover; actress Molly Gordon; Angelique Kidjo performs.

Actress Diane Keaton; journalist Jim Acosta; Beach House performs.

Actor Will Arnett; actress Lilly Singh; MGMT performs.

TV host Ryan Seacrest; actress Gillian Jacobs; Julia Michaels performs.

Actor Matthew McConaughey; actor Julian Dennison; James Bay performs.

Actor Johnny Knoxville; TV personality Jenna Dewan; Franz Ferdinand performs.

Actress Shailene Woodley; TV host Jordan Klepper; Blink 182 performs.

TV host Samantha Bee; actor Dylan Minnette; Anderson Paak performs.

Actress Keri Russell; actress Pamela Adlon; Maddie Poppe performs.

Actor Kevin Hart.

Actress Claire Danes; actor Jason Mitchell; Pusha T performs.