From "Cougar Town", actress Courteney Cox; “The Bachelor” Juan Pablo Galavis; musical guest Johnathan Rice.

Actress Amy Adams; actress Margot Robbie; musical guests Xolie Morra & The Strange Kind.

From "Modern Family", actress Sofia Vergara; actress Emmy Rossum; musical guest Yuna.

Actress Kristen Wiig; comedian Nick Kroll; musical guests Lord Huron.

From "Jack Ryan: Shadow Recruit", actor Kevin Costner; from "American Idol", judge Harry Connick Jr.; musical guest Michael Kiwanuka.

From "Episodes", actor Matt LeBlanc; from "12 Years a Slave", actress Lupita Nyong'o; musical guests The Fray.

From "August Osage County", actress Meryl Streep; from "HitRECord on TV!", host Joseph Gordon-Levitt; musical guest Jonny Lang.

From "Jack Ryan: Shadow Recruit", actor Chris Pine; from "Shark Tank", participant Kevin O'Leary; musical guest Gregory Porter.

From "NCIS: Los Angeles", actor and rapper LL Cool J; from "Agents of S.H.I.E.L.D.", actress Chloe Bennet; musical guests Vampire Weekend.

From "Rake", actor Greg Kinnear; from "Jack Ryan: Shadow Recruit", director and actor Kenneth Branagh; musical guests Young the Giant.

From "Lizzie Borden", actress Christina Ricci; from "New Girl", actor Jake Johnson; musical guest Danny Brown.

From "Keeping Up with the Kardashians", reality star Kim Kardashian; from "The Bachelor: Sean and Catherine's Wedding", Sean Lowe & Catherine Giudici; musical guest Jason Derulo.

From "NCIS: Los Angeles", actor Chris O'Donnell; player for the NBA Indiana Pacers, Paul George; musical guests The Airborne Toxic Event.

Actor Morgan Freeman; from "Mom", actress Anna Faris; musical guests Mötley Crüe.

From "At Middleton", actor Andy García; chef Norman Van Aken; musical guests Broken Bells.

From "That Awkward Moment", actor Zac Efron; from "The Lego Movie", actress Alison Brie; musical guest Sara Bareilles.

Sharon Osbourne from "The Talk"; actors Shailene Woodley and Theo James ("Divergent"); Zedd performs.

Actor Barkhad Abdi ("Captain Phillips"); Dr. Mehmet Oz; The Lone Bellow performs.

Actor Ashton Kutcher ("Two and a Half Men"); actress Sarah Paulson ("12 Years a Slave"); The Head and the Heart perform.

The cast of George Clooney's The Monuments Men

Actors Ethan Hawke & Julie Delpy; actor Joel Kinnaman; Eric Church performs.

Seattle Seahawks Richard Sherman & Malcolm Smith; actor Gary Oldman; music from Crosses †††

Actor Nathan Fillion; actor Abbie Cornish; Naughty Boy and Sam Smith perform.

Actor Kevin Hart; actor Alex Pettyfer; Sage the Gemini performs.

Will Arnett; Sports Illustrated Swimsuit Issue Cover Models Nina Agdal, Lily Aldridge and Chrissy Teigen; Music from Silversun Pickups.

Author Bill O'Reilly; actor Kit Harington; Phantogram performs.

Actor Matthew McConaughey; actress June Squibb; Switchfoot performs.

Actor Jonah Hill; TV personalities Willie Robertson and Korie Robertson; New Politics performs.

Actor Liam Neeson; animal expert Dave Salmoni; Josh Groban performs.

Actor Joel McHale; actor Ansel Elgort; music from Benmont Tench.