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. ...

Anthony Anderson, Tracee Ellis Ross and Laurence Fishburne (Black-ish (2014)); Guillermo Díaz (Scandal (2012)). Also: Earth Wind and Fire perform with Chicago. ...

Dr. Phil McGraw (Dr. Phil (2002)); professional boxer Manny Pacquiao. Also: Nicholas Murphy (aka Chet Faker) performs. ...

Courteney Cox (Cougar Town (2009)); chef Steve Martorano. Also: Alabama Shakes perform. ...

John Stamos (Members Only (2015)); Michael B. Jordan (Fantastic Four (2015)). Also: Matt and Kim perform. ...

Jamie Foxx; Betty White (Hot in Cleveland (2010)). Also: Jamie Foxx performs with Chris Brown and Kid Ink. ...

Tim Allen (Last Man Standing (2011)); Kiernan Shipka (Mad Men (2007)). Also: 'Drew Holcomb and The Neighbors' perform. ...

Cobie Smulders (Avengers: Age of Ultron (2015)); BBQ cooking expert Aaron Franklin. Also: Chic performs with Nile Rodgers. ...

Robert Downey Jr., Chris Hemsworth, Chris Evans, Scarlett Johansson, Jeremy Renner and Mark Ruffalo (Avengers: Age of Ultron (2015)). Also: The War on Drugs perform. ...

Jason Statham (Furious 7 (2015)); NBA analyst Jalen Rose. Also: Brian Wilson performs. ...

Dwayne Johnson (Furious 7 (2015)); Rihanna. Also: Death Cab for Cutie perform. ...

Kurt Russell (Furious 7 (2015)); comedian Jeff Ross. Also: Van Halen perform. ...

Vin Diesel (Furious 7 (2015)). Also: Van Halen perform. ...

Zooey Deschanel (New Girl (2011) and The Driftless Area (2015)); Jeff Perry (Scandal (2012)). Also: Charlie Wilson performs. ...

Matthew Perry (The Odd Couple (2015)); professional wrestler John Cena. Also: For King and Country perform. ...

Maisie Williams (Game of Thrones (2011)). Also: Saint Motel perform. ...

Chelsea Clinton; Adam Carolla. Also: Zac Brown Band perform. ...

Willie Nelson; Colin Hanks (All Things Must Pass: The Rise and Fall of Tower Records (2015)). Also: Edward Sharpe and the Magnetic Zeros and Edward Sharpe and the Magneti ...

Bill Murray; cast of The Walking Dead (2010)). Also: The Weeknd perform. Broadcast from the Joe R. and Teresa Lozano Long Center for the Performing Arts in Austin, Texas. ...

Dallas Cowboys quarterback Tony Romo; comedian Hannibal Buress. Also: James Bay performs. Broadcast from the Joe R. and Teresa Lozano Long Center for the Performing Arts ...

Julia Louis-Dreyfus (Veep (2012)); Robert Rodriguez (The Director's Chair (2014)); Spoon perform. Broadcast from the Joe R. and Teresa Lozano Long Center for the Performi ...

Kevin Hart (Get Hard (2015) and The Wedding Ringer (2015)). Also: Brad Paisley perform. Broadcast from the Joe R. and Teresa Lozano Long Center for the Performing Arts in ...

President Barack Obama; Sean Penn (The Gunman (2015)). Also: Earth Wind and Fire perform. ...