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.

From "The Paper Boy", actor Zac Efron; musicians Jack Black & Kyle Glass; musical performance by Tenacious D.

From "Argo", actor Ben Affleck; from "The X Factor", juror/singer Demi Lovato; musical guest Ben Howard.

From "Smashed", actress Megan Mullally; “Dancing with the Stars” castoffs Helio Castroneves, Drew Lachey, Anna Trebunskaya & Chelsie Hightower; musical guests Father John Misty.

From "Up All Night", actor Will Arnett; from "The Guy Under the Sheets: The Unauthorized Autobiography", actor/comic Chris Elliott; musical guest Dwight Yoakam.

From "Here Comes the Boom", actor Kevin James; from "The Perks of Being a Wallflower", actor Ezra Miller; musical guests Bloc Party.

From "Parks and Recreation", actor/comedian Aziz Ansari; from "Here Comes Honey Boo Boo", Alana “Honey Boo Boo” Thompson & June “Mama” Shannon; musical guest Josh Turner.

Comic Don Rickles (promoting "Live at the Taj Mahal in Atlantic City"); "Dancing with the Stars" castoff Bristol Palin; musical guest Miguel.

From "Community", actor Joel McHale; musical guest Joe Walsh.

From "Alex Cross", Matthew Fox; from "Revenge", actress Emily VanCamp; musical guest Paul Weller.

Actor Jerry O'Connell; Russell Peters; musical guest Prince.

From "The Guns and Roses Residency", musician Axl Rose; from "Suburgatory", actress Ana Gasteyer; musical guests The Whigs.

First Lady Michelle Obama; from "Cloud Atlas", actress Halle Berry; musical guest Ciara.

First of four shows broadcast from New York City. Guests: from "Live with Kelly and Michael", co-host Kelly Ripa; comedian Chris Rock; musical guest Alicia Keys.

Second of four shows broadcast from New York City. Guests: radio host Howard Stern; actor/comedian Tracy Morgan; musical guests Sharon Jones and the Dap-Kings.

Third of four shows broadcast from New York City. Guests: from "Late Show with David Letterman", host David Letterman; musical guest Vampire Weekend.

Fourth of four shows broadcast from New York City. Guests: TV hosts Jon Stewart ("The Daily Show") & Stephen Colbert ("The Colbert Report"); musical guests The Avett Brothers with the Brooklyn Philharmonic.

From "Twilight Saga: Breaking Dawn – Part 2", actor Robert Pattinson; from "Chris Hardwick: Mandroid", comedian/host Chris Hardwick; musical guests Ben Folds Five.

From "Flight", actor John Goodman; from "Nashville", actress Hayden Penettiere; musical guest Machine Gun Kelly.

From "The Art of Men (I Prefer Mine al Dente)", actress Kirstie Alley; animal trainer Dave Salmoni; musical guests Tyler Bryant & The Shakedown.

From "Sky Fall", actor Daniel Craig; from "Twilight Saga: Breaking Dawn – Part 2", author Stephenie Meyer; musical guests Boys Like Girls.

From "American Horry Story", actress Jessica Lange; from "Happy Endings", actor Adam Pally; musical guests Game feat. Tyga & Wiz Khalifa.

From "Up All Night", actress Christina Applegate; "Dancing with the Stars" castoffs Kirstie Alley & Gilles Marini; musical guests Youngblood Hawk.

Actor/comedian Martin Short; from "Life of Pi", actor Suraj Sharma; musical guest Ne-Yo.

Actor/comic Mel Brooks; from "The Outpost: An Untold Story of American Valor", author/journalist Jake Tapper; musical guest Jason Aldean.

From "Modern Family", actor Eric Stonestreet; from "X Factor", juror Antonio “L.A.” Reid; musical guests Aimee Mann & James Mercer.

From "A Dark Truth", actor Andy Garcia; "Dancing with the Stars" castoffs Emmitt Smith & Apolo Anton Ohno; musical guest Andy Allo.

From "Last Man Standing", actor Tim Allen; Filipino professional boxer Manny Pacquiao; musical guest Flo Rida.

From "Dick Clark's New Year's Rockin' Eve with Ryan Seacrest 2013", host Ryan Seacrest; from FOX's college football pregame show, host Erin Andrews; musical guests Soundgarden.

From "Malibu Country", actress/musician Reba McEntire; former box champion Mike Tyson; from "Dancing with the Stars", winner Melissa Rycroft & Tony Dovolani; musical guests Future.

From "Dead Fall", actor Eric Bana; from "Homeland", actor Damian Lewis; musical guest Wiz Khalifa.

From "CSI: Crime Scene Investigation", actor Ted Danson; from "Game of Thrones", actress Emilia Clarke; musical guests Larry g(EE)

From "This Is 40", actress Leslie Mann; Seth MacFarlane as Ted; musical guest Sarah Jaffe.

From "Promised Land", actor John Krasinski; from "Sleepwalk with Me", writer/comedian Mike Birbiglia; musical guests Atlas Genius.

TV host Carson Daly; from "Happy Endings", actor Zachary Knighton; musical guest Dan Deacon.

From "Les Misérables", actor Hugh Jackman; from "The Office", actress Jenna Fischer; musical guest 2 Chainz.

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