Andy Samberg (7 Days in Hell (2015)); Seattle Seahawks quarterback Russell Wilson. Also: Butch Walker performs. ...

Andy Samberg; Liev Schreiber (Ray Donovan (2013)); mix martial artist Ronda Rousey. Also: Vince Staples performs. ...

Kathy Griffin; Rob Corddry (Ballers (2015)). Also: Everclear performs. ...

Emilia Clarke (Terminator Genisys (2015)); Vanessa Bayer (Trainwreck (2015)). Also: Miguel performs. ...

Jada Pinkett Smith (Magic Mike XXL (2015)); Jai Courtney (Terminator Genisys (2015)). Also: Nate Ruess performs. ...

Comic Wanda Sykes; Jeffrey Dean Morgan (Extant (2014), Texas Rising (2015) and The Secret Life of Marilyn Monroe (2015)). Also: A Thousand Horses perform. ...

Jon Hamm (Minions (2015)); Lizzy Caplan (Masters of Sex (2013)); comedian Jesse Elias. Also: Sheila E. sits in with Cleto and the Cletones. ...

Andre Iguodala; Chris Tucker; Mark Feuerstein (Royal Pains (2009) and Larry Gaye: Renegade Male Flight Attendant (2015)). Also: Robert DeLong performs. ...

Jack Black (The Brink (2015)); Jeffrey Tambor Transparent (2014)). Also: Fifth Harmony perform with Kid Ink. ...

Bill Hader (Trainwreck (2015)); Shameik Moore (Dope (2015)); Phil Selway. ...

Viola Davis (Lila and Eve and How to Get Away with Murder (2014)); Adam Scott (The Overnight (2015) and Parks and Recreation (2009)). Also: Wale Folarin performs. ...

Zoe Saldana (Infinitely Polar Bear (2014)); Tyler the Creator. Also: R5 perform. ...

Kit Harington (Game of Thrones (2011)); comedian Chris Gethard (The Chris Gethard Show: Public Access (2011)). Also: Dwight Yoakam performs. ...

Chris Pratt (Jurassic World (2015)); Abby Elliott (Odd Mom Out (2015)). Also: Fetty Wap performs. ...

Joseph Gordon-Levitt (HitRECord on TV (2014)); Emmanuelle Chriqui (Entourage (2015)); The Price Is Right (1972) contestant Danielle Perez. Also: Wiz Khalifa performs. ...

Allison Janney (Spy (2015) and Mom (2013)); Paul Dano (Love and Mercy); 2015 National Spelling Bee co-champions Vanya Shivashankar and Gokul Venkatachalam. Also: Hiatus K ...

Jeremy Piven (Entourage (2015)); author Adam Carolla (Daddy, Stop Talking!). Also: Hozier performs. ...

Jennifer Connelly (Aloft (2014)); director Judd Apatow, author of Sick in the Head: Conversations About Life and Comedy; 2015 North American School Scrabble champions Noa ...

Ray Liotta (Texas Rising (2015)). Also: Zedd performs. ...

George Clooney (Tomorrowland (2015)); Britt Nilsson, the latest castoff from The Bachelorette (2003). ...

Mariah Carey performs. Also: Alexandra Daddario (San Andreas (2015)). ...

Paul Giamatti (San Andreas (2015)); author Bob Pflugfelder. ...

Amy Schumer (Trainwreck (2015)); 2015 Billboard Music Awards (2015) co-host Ludacris. Also: José González performs. ...

Elizabeth Banks (Pitch Perfect 2 (2015)); comedian Marc Maron. Also: Earl Sweatshirt (aka Earl Sweatshirt) performs with BadBadNotGood. ...

Hailee Steinfeld (Pitch Perfect 2 (2015)). Also: Brandon Flowers performs. ...

Singer Adam Levine (The Voice (2011)); Nicholas Hoult (Mad Max: Fury Road (2015) and Kill Your Friends (2015)). Also: Maroon 5 perform. ...

Julie Bowen (Modern Family (2009)); Adam Devine (Pitch Perfect 2 (2015)). Also: Imagine Dragons perform. ...

Ryan Seacrest (American Idol (2002)); Brittany Snow (Pitch Perfect 2 (2015)). Also: a musical mash-up featuring Imagine Dragons and REO Speedwagon. ...

Kim Kardashian West; Michael Sheen (Masters of Sex (2013) and Far from the Madding Crowd (2015)). Also: Yelawolf performs with Travis Barker. ...

Billy Crystal (The Comedians (2015)); animal handler Dave Salmoni. Also: Modest Mouse perform. ...

Patricia Heaton (The Middle (2009)). Also: Tim McGraw performs. ...

Kevin Spacey (House of Cards (2013)); Ioan Gruffudd (Keep Watching (2017) and San Andreas (2015)). Also: Stromae performs. ...