Director Martin Scorsese ("Hugo"); Kenneth Branagh ("My Week With Marilyn"). Also: Angels & Airwaves perform

Oprah Winfrey; Musical Guest Coldplay

“Dancing with the Stars” contestant Maria Menounos; musical guest Mat Kearney

Actor/comedian Will Ferrell; actress Ellie Kemper; music from Allen Stone

Actor Channing Tatum; actress Genesis Rodriguez

Actress Jessica Simpson; actor Gael García Bernal

Actress Kristen Bell; actor/musician Ice Cube; musical guests KISS

Actress Zooey Deschanel; actor Steven Seagal; musical guests Shinedown

Actress Julia Louis-Dreyfus; Scrabble champions Andy Hoang & Erik Salgado; musical guests The Hives

Actor/comedian Andy Samberg; National Spelling Bee Champion Snigdha Nandipati; musical guests Edward Sharpe & The Magnetic Zeros

Zac Efron (The Paper Boy), Jack Black, Kyle Glass, Musical Guest Tenacious D

Ben Affleck (Argo), Demi Lovato (X Factor), Musical Guest Ben Howard

Megan Mullally (Smashed), Drew Lachey, Anna Trebunskaya, Helio Castroneves, Chelsie Hightower, Musical Guest Father John Misty

Will Arnett (Up All Night), Chris Elliot (The Guy Under the Sheets: The Unauthorized Autobiography), Musical Guest Dwight Yoakam

Kevin James (Here Comes the Boom), Ezra Miller (The Perks of Being a Wallflower)

Aziz Ansari (Parks and Recreation), Alana "Honey Boo Boo" Thompson and June "Mama" Shannon (Here Comes Honey Boo Boo), Musical Guest Josh Turner

Don Rickles (Performing at the Taj Mahal in Atlantic City), Dancing with the Stars Castoff, Musical Guest Miguel

Joel McHale (Community), Joe Walsh, Musical Guest Joe Walsh

Matthew Fox (Alex Cross), Emily VanCamp (Revenge), Musical Guest Paul Weller

Jerry O'Connell, Russell Peters, Musical Guest Prince

Axl Rose (The Guns and Roses Residency), Ana Gasteyer (Suburgatory), Musical Guest The Whigs

First Lady Michelle Obama, Halle Berry (Cloud Atlas), Musical Guest Ciara

Kelly Ripa (Live with Kelly and Michael), Musical Guest Alicia Keys

Howard Stern, Tracy Morgan, Musical Guest Sharon Jones & the Dap-Kings

David Letterman ("Late Show with David Letterman"), Musical Guest Vampire Weekend

Jon Stewart ("The Daily Show") & Stephen Colbert ("The Colbert Report"), Musical Guest The Avett Brothers with the Brooklyn Philharmonic

Robert Pattinson ("Twilight Saga: Breaking Dawn - Part 2"), Chris Hardwick ("Chris Hardwick: Mandroid"), Musical Guest Ben Folds Five

John Goodman ("Flight"), Hayden Penettiere ("Nashville"), Music Guest Machine Gun Kelly

Kirstie Alley ("The Art of Men (I Prefer Mine Al Dente)"), Animal Trainer Dave Salmoni, Musical Guest Tyler Bryant & The Shakedown

Daniel Craig ("Sky Fall"), Stephenie Meyer ("Twilight Saga: Breaking Dawn - Part 2"), Musical Guest Boys Like Girls

Jessica Lange ("American Horry Story"), Adam Pally ("Happy Endings"), Musical Guest Game feat. Tyga & Wiz Khalifa

Christina Applegate ("Up All Night"), "Dancing with the Stars" Castoffs, Musical Guest Youngblood Hawk

Martin Short, Suraj Sharma ("Life of Pi"), Musical Guest Ne-Yo

Mel Brooks, Jake Tapper ("The Outpost: An Untold Story of American Valor"), Musical Guest Jason Aldean

Eric Stonestreet ("Modern Family"), L.A. Reid ("X Factor"), Muiscal Guests Aimee Mann & James Mercer

Andy Garcia ("A Dark Truth"), "Dancing with the Stars" Castoffs, Musical Guest Andy Allo

Tim Allen ("Last Man Standing"), Manny Pacquiao, Musical Guest Flo Rida

Ryan Seacrest ("Dick Clark's New Year's Rockin' Eve with Ryan Seacrest 2013"), Erin Andrews (FOX's College Football Pregame Show), Musical Guest Soundgarden

Reba McEntire ("Malibu Country"), Mike Tyson, Melissa Rycroft & Tony Dovolani ("Dancing with the Stars"), Musical Guest Future

Eric Bana ("Dead Fall"), Damian Lewis ("Homeland"), Musical Guest Wiz Khalifa

Ted Danson ("CSI: Crime Scene Investigation"), Emilia Clarke ("Game of Thrones"), Musical Guest Larry g(EE)

Leslie Mann ("This Is 40"), Seth MacFarlane as Ted ("Ted"), Musical Guest Sarah Jaffe

John Krasinski ("Promised Land"), Mike Birbiglia ("Sleepwalk with Me"), Musical Guest Atlas Genius

TV host Carson Daly; actor Zachary Knighton ("Happy Endings"); musical guest Dan Deacon

Hugh Jackman ("Les Misérables"), Jenna Fischer ("The Office"), Musical Guest 2 Chainz

Samuel L. Jackson ("Django Unchained"); the cast of "Jersey Shore": Snooki, JWoww, Pauly D., Vinny, Sami, Ronnie, Mike and Deena; Musical Guest Ed Sheeran