Saturday Night Live veteran Jimmy Fallon takes the Late Night reins from Conan O'Brien when O'Brien succeeds Jay Leno as new host of The Tonight Show in 2009.
The cast of “30 Rock”: Jack McBrayer, Jane Krakowski, Tracy Morgan, Alec Baldwin, Tina Fey; musical guest John Cale.
James Adomian preempted.
Actor and musician Justin Timberlake; from "Justified", actor Timothy Olyphant; the most recent "All-Star Celebrity Apprentice" castoff; Justin Timberlake performs.
Former NBA star Charles Barkley; from "Girls", actress Allison Williams; musician Clive Davis; Justin Timberlake performs.
From "The Incredible Burt Wonderstone", actor/comedian Steve Carell; from "The Call", actress Abigail Breslin; musician Justin Timberlake performs.
Talk show host Katie Couric; from "Justin and the Knights of Valour", actor Freddie Highmore; musician Justin Timberlake performs.
Actor/musician Justin Timberlake; from "Nashville", actress Hayden Panettiere; Justin Timberlake performs.
From "The Croods", actor Nicolas Cage; comic Mike Birbiglia; the most recent "All-Star Celebrity Apprentice" castoff; musical guest Kip Moore.
From "Spring Breakers", actress Selena Gomez; from "Inside Comedy", host/comic David Steinberg; musical guests Pinback.
Former New York City Mayor Rudy Giuliani; from "This Is 40", producer Judd Apatow; chef Marcus Samuelsson.
Drew Barrymore; from "Rogue", actress Thandie Newton; musical guest Brandi Carlile.
From "The Following", actor Kevin Bacon; from "Revolution", actress Elizabeth Mitchell; from "For What It's Worth", producer Gary Dell'Abate; musical guests Sigur Rós.
From "The Voice", musician Usher; from "House of Cards", actress Kate Mara; "All-Star Celebrity Apprentice" castoff; musical guests Wale feat. Tiara Thomas.
From "Law and Order: Special Victim's Unit", actor and former rapper Ice-T; from "Talking Dead", host and comedian Chris Hardwick; musical guests Little Green Cars perform.
Television personality and co-host of "Today", Kathie Lee Gifford; James Purefoy; musician Dido performs.
From "Tyler Perry's Temptation", actor Tyler Perry; from "Somebody Up There Likes Me", actor/producer Nick Offerman; author Thom Filicia; musical guest Blake Shelton.
From Broadway play "Orphans", actor Alec Baldwin; from "Game of Thrones" and Broadway play "Breakfast at Tiffany's", actress Emilia Clarke; "All-Star Celebrity Apprentice" castoff; Janelle Monáe performs.
From "Excuse My French", actor Tracy Morgan; from "Watch What Happens: Live", host Andy Cohen; musical guests Deerhunter.
From "JASH", actress/comic Sarah Silverman; from "Hannibal", actor Hugh Dancy; musician Gordon Lightfoot performs.
From "Mike & Molly", actress Melissa McCarthy; professional wrestler Chris Jericho; musician Ryan Bingham performs.
Author and journalist Anderson Cooper; from "Saturday Night Live", actor and comic Taran Killam; vlogger/magician Stuart Edge; musical guest Cat Power.
Musician Keith Richards; from "Nurse Jackie", actress Edie Falco; "All-Star Celebrity Apprentice" castoff; musical guest Ghostface Killah.
From "The Good Wife", actress Julianna Margulies; from "Parks and Recreation", actor Adam Scott; musical guests Jonas Brothers.
From "I Didn't Ask to Be Born (But I'm Glad I Was)", comic Bill Cosby; from "Scary Movie 5", actress Ashley Tisdale; chef Sandra Lee.
From "The Internship", actor Vince Vaughn; from "Inside Amy Schumer", comedienne Amy Schumer; from "The Verge", journalist Joshua Topolsky; musical performance by Major Lazer.
From "Oblivion", actor Tom Cruise; from "Dallas", actress Jordana Brewster; musical guest Shuggie Otis.
From "Mad Men", actress January Jones; journalist Savannah Guthrie; newest castoff from "All-Star Celebrity Apprentice"; from "Knife Fight", chef Ilan Hall.
New York Giants quarterback Eli Manning; from "Nurse Jackie", actor Adam Ferrara; musician Phosphorescent performs.
From "Derek", actor/comic Ricky Gervais; from "Mad Men", actress Jessica Paré; hip hop artist Talib Kweli performs.
From "The Big Wedding", Academy Award-winning actress Susan Sarandon; from "Pain & Gain", actor Anthony Mackie; rock band The National performs.
From "Parks and Recreation", actress/comedienne Amy Poehler; from "The English Teacher", actor Michael Angarano; musician Iron & Wine performs.
From "Pain & Gain", actress Rebel Wilson; from "Anthony Bourdain Parts Unknown", host Anthony Bourdain; the latest "All-Star Celebrity Apprentice" castoff; from "Parks and Recreation", comic Retta.
Actress Winona Ryder; stand-up comic and podcast host Marc Maron; country music sensation Kenny Chesney performs.
From "Iron Man 3", Sir Ben Kingsley; from "Big Brain Theory", actor Kal Penn; musical guest Johnny Marr.
Guest host on "Saturday Night Live" and from "The Hangover: Part 3", actor/comedian Zach Galifianakis; from "The Great Gatsby", actress Isla Fisher; author George Lois; musical guests Icona Pop; rapper Too $hort joins The Roots.
From "The Great Gatsby", actress Carey Mulligan; from "What Masie Knew", actor Alexander Skarsgard; musician John Densmore; musical guest Eve.
Actor/comedian/musician Steve Martin and singer/songwriter Edie Brickell; from "The Office", actress Jenna Fischer; latest "All-Star Celebrity Apprentice" castoff; music by Steve Martin & Edie Brickell.
From "The Office", actor John Krasinski; from "Aftershock" and "Hemlock Grove", director/writer Eli Roth; pro boxer Floyd Mayweather, Jr.; musical guests The Breeders.
TV host and author Rachel Maddow; from "Star Trek: Into Darkness", actor Zachary Quinto; Lady Antebellum perform.
From Broadway musical "Annie", actress Jane Lynch; from "Game of Thrones" and "Mama", actor Nikolaj Coster-Waldau; musical guests Lady Antebellum.
From "NCIS: Los Angeles", actor/musician LL Cool J; from "How I Met Your Mother", actress Alyson Hannigan; from "Star Trek. Into Darkness", actor Benedict Cumberbatch; LL Cool J performs.
From "The Hangover Part III", actor Bradley Cooper; from the comedy "Arrested Development", actress Portia de Rossi; the latest “All-Star Celebrity Apprentice” castoff; Vampire Weekend performs.
From "The Today Show", journalist Matt Lauer; from "The Hangover Part III", actor Ken Jeong; French music group Phoenix performs; Bilal sits in with The Roots.
From "Modern Family", actress Julie Bowen; actress and singer Demi Lovato; music from The Flaming Lips; Treach sits in with The Roots.
From "The Mindy Project", creator/actress Mindy Kaling; an interview with and performance by country music star Tim McGraw.
From "Star Trek: Into Darkness", actress Zoe Saldana; from "Family Tree", actor Chris O'Dowd; hip hop trio De La Soul performs.
From "Epic", actor Colin Farrell; actor and rapper Jaden Smith from the film "After Earth"; the finalists of "All-Star Celebrity Apprentice"; R&B group Ahmir performs.
From "Epic", actor/comedian Aziz Ansari; from "The Fall", actress Gillian Anderson; musical guest J. Cole; P.J. Morton sits in with The Roots.
Comedian Dana Carvey; from "Mad Men", actress Elisabeth Moss; musical guest Bobby McFerrin.
From "What Masie Knew", actress Julianne Moore; from "Modern Family" and "Comedy of Errors", actor Jesse Tyler Ferguson; chef Danny Bowien; Boz Scaggs sits in with The Roots.
From "Fast and the Furious 6", actor Paul Walker; from "'Much Ado About Nothing", director Joss Whedon; musical guests They Might Be Giants.
From "The English Teacher", actor Nathan Lane; from "After Earth", actress Zoë Kravitz; alternative-metal music group Tomahawk performs.
From "Before Midnight" and "The Purge", actor Ethan Hawke; from "The Internship", actress Rose Byrne; former athlete Bruce Jenner; post-punk music group Savages performs; musician Quinn Sullivan sits in with The Roots.
From "The Pirates of Penzance", actress Glenn Close; from "Legendary" and "Race to the Scene", actor Dolph Lundgren; musical guests Portugal. The Man.
From "42", actor Christopher Meloni; television personality Cat Deeley; musical guests Broken Social Scene feat. Feist.
From "The Smurfs 2", actor Neil Patrick Harris; comic Jim Gaffigan; musical guests The-Dream feat. Gary Clark Jr.; Bob James & David Sanborn sit in with The Roots.
From "Man of Steel", actor Russell Crowe; from "The Bling Ring", director Sofia Coppola; from Cirque du Soleil show "Michael Jackson ONE", director Jamie King; musical guests Kelly Rowland feat. Wiz Khalifa.
From "This Is the End", actor/writer/director Seth Rogen; from "Arrested Development", actor Jeffrey Tambor; The Lumineers perform live.
New Jersey Governor Chris Christie; from "Sam & Cat", actress Jennette McCurdy; from "The Batali Brothers Cookbook", Mario, Benno & Leo Batali.
From "Veep", actress Julia Louis-Dreyfus; from "Citizen Twain", actor Val Kilmer; stand-up comic Nate Bargatze performs.
From "The Voice", judge and musician Adam Levine; from "Soul Man" and "Who Wants to Be a Millionaire", actor/comic Cedric the Entertainer; musical guests Ariana Grande feat. Mac Miller.
Show #1 of videogame week. From "America's Got Talent", juror Howard Stern; from "Mistresses (US)", actress Alyssa Milano; Xbox 1 demos for "Killer Instinct" and "Forza Motorsports 5"; musical guests Anamanaguchi.
Show #2 of videogame week. From "Comedians in Cars Getting Coffee", stand-up performance by and interview with comedian Jerry Seinfeld; musical guest Ice Cube; Sony PS4 demo for "Knack"; a special appearance by Brad Pitt.
Show #3 of videogame week. From "Kevin Hart: Let Me Explain", comedian Kevin Hart; from "The Newsroom", actress Olivia Munn; videogame demo for "Watch Dogs"; musical guests Chvrches.
Show #4 of videogame week. From "Wilfred (US)", actor Elijah Wood; from "Defiance", actor Grant Bowler; videogame demo for "Call of Duty: Ghosts"; musical guests Yeah Yeah Yeahs.
Show #5 of videogame week. From "Redemption", actor Jason Statham; from "Madden 25", NFL running back Adrian Peterson; the guys from RecordSetter; Nintendo Wii U demos for "Game & Wario" and "Super Mario 3D World"; musical guests Zedd feat. Foxes.
From "The Newsroom", actor Jeff Daniels; from "Grown Ups 2", actor Nick Swardson; animal expert Jeff Musial; musical guests Preservation Hall Jazz Band.
From "Grown Ups 2", actor David Spade; from "Kris", talk show host Kris Jenner; musical guests Mudhoney; Preservation Hall Jazz Band sit in with The Roots.
From "Grown Ups 2", actor/comedian Adam Sandler; from "The Killing (US)", actress Mireille Enos; musical guest Eleanor Friedberger.
From "Grown Ups 2", actress Salma Hayek Pinault; from "Pacific Rim", actor Charlie Day; executive chef April Bloomfield; singer Chrisette Michele sits in with The Roots.
From "Only God Forgives", actress Kristin Scott Thomas; actor Sam Rockwell; musical guests Ciara feat. Future.
From "The Skeleton Twins", actress Kristen Wiig; from "Wild 'n Out", actor Nick Cannon; post-punk musician Adam Ant performs live.
From "Red 2", award winning actor Bruce Willis; from "Here Comes Honey Boo Boo", “Mama” June Shannon; musical guest Mayer Hawthorne.
From "Red 2", actress Catherine Zeta-Jones; from "Grown Ups 2", actor/comedian Colin Quinn; punk group Gogol Bordello performs live.
From "R.I.P.D.", actor Ryan Reynolds; actor/comedian Bob Saget; pop-rock group Fall Out Boy performs live; Michael Winslow sits in with The Roots.
From "R.I.P.D.", actor Jeff Bridges; from "Supermarket Superstar", host and former wrestler Stacy Keibler; musical guests Jesse and the Rippers.
Actor/comedian Howie Mandel; politician Eliot Spitzer; alternative rock group Kings of Leon performs; Ronald Isley sits in with The Roots.
From "The Wolverine", actor Hugh Jackman; from "Orange Is the New Black", actress Natasha Lyonne; chef Frank Pellegrino Jr.; musician Buddy Guy sits in with The Roots.
From "The To Do List", actor/comedian Andy Samberg; a performance of YOLO by The Lonely Island feat. Jimmy Fallon & The Roots; from " The Spectacular Now ", actress Shailene Woodley; traveling couple Marcine & Nita Lou Webb; musical guests New Order.
From "Clear History", actor Liev Schreiber; from "Guys with Kids", actor Anthony Anderson; musical guests Imagine Dragons.
From "2 Guns", actor Mark Wahlberg; from "Unforgettable", actress Poppy Montgomery; musical guests The Virgins; musician J. Mascis sits in with The Roots.
Actor Dan Aykroyd; from "2 Guns", actress Paula Patton; musical guest Brad Paisley; musician Booker T. Jones sits in with The Roots.
From "America's Next Top Model", host Tyra Banks; from "The World's End", actor Simon Pegg; pastry chef Dominique Ansel.
From "We're the Millers", actress Jennifer Aniston; musician Lenny Kravitz; musical guests Goodie Mob feat. CeeLo Green.
From "Breaking Bad", actor Bryan Cranston; from "Hell on Wheels", actor/rapper Common; from "Call the Midwife", actress Miranda Hart; musical guest Robin Thicke.
Actor and comedian Seth Myers; actress Lily Collins; musical guest 2 Chainz feat. The Roots.
From "The Newsroom", actress Jane Fonda; from "Tough Love: CoEd", hosts Steve & Monica Ward; musical guests The Head and the Heart; musician Nile Rodgers sits in with The Roots.
From "Lovelace", actress Amanda Seyfried; author Fran Lebowitz; musical guest Brett Eldredge.
Retired athlete Michael Strahan; actress and singer-songwriter Demi Lovato; musical guest Neko Case.
From "Project Runway", host and ex-model Heidi Klum; Mayor of Newark, New Jersey, Cory Booker; The Julie Ruin perform; Raheem Devaughn sits in with The Roots.
From "Khumba", actor Steve Buscemi; TV personality Bethenny Frankel; a performance by “America's Got Talent” semi-finalists, illusionist duo Leon Etienne and Romy Low; chef Daniel Humm.
Journalist Katie Couric; actor and comedian Patton Oswalt; from "Instructions Not Included", actor Eugenio Derbez; musical guests New Politics; singer Tamar Braxton sits in with The Roots.
Actor and comedian Steve Harvey; from "Duck Dynasty", Willie, Jep & Uncle Si Robertson; musical guests Kanye West feat. Charlie Wilson & The Roots.
From "The Family", actress Michelle Pfeiffer; from "Arrested Development", actor and comedian David Cross; Bob Odenkirk joins the audience as David's biggest fan; musical guests Volcano Choir.
From "Derek", actor/writer and comedian Ricky Gervais; actor Michael Shannon; musical guests MGMT; musician Simon Townshend sits in with The Roots; Jimmy presents "Joking Bad", a "Breaking Bad" parody.
From "The Family", actor Robert De Niro; from "Ping Pong Summer", actress Amy Sedaris; a performance by “America's Got Talent” finalists, hand balancer duo the KriStef Brothers; musical guests Alt-J; musician Peter Hook sits in with The Roots.
From "Her", actress Scarlett Johansson; actor and musician Drake; musical guests Drake feat. Sampha.
From "Runner Runner", actor Ben Affleck; from "The Mindy Project", actress and creator Mindy Kaling; musical guests the Pixies.
From the Broadway play "Romeo and Juliet", actor Orlando Bloom; musician Elvis Costello; from "The Short Game", World Champion kid golfers; musical guests Elvis Costello feat. The Roots.
From "Rush", actor Chris Hemsworth; from the Broadway play "Honeymoon in Vegas", actor Tony Danza; musical performance by Jack Johnson.
From "Prisoners", actor Hugh Jackman; "Gone Girl" author Gillian Flynn; the winner of this year's "America's Got Talent", dancer Kenichi Ebina; musical guests Elvis Costello feat. Marisol & The Roots.
From "The Blacklist", actor James Spader; model Kate Upton; photographer Neal Preston; chef Ilan Hall.
From "Don Jon", director/writer/actor Joseph Gordon-Levitt; from "Hello Ladies", creator/actor and comedian Stephen Merchant; musical guests The Avett Brothers.
From "The Michael J. Fox Show", actor Michael J. Fox; coach on "The Voice", Blake Shelton; musical guests Kings of Leon.
Host of the 39th season premier of "Saturday Night Live", Tina Fey; musical guests Goldfrapp; bass player Thundercat sits in with The Roots.
From "The Good Wife", actress Julianna Margulies; from "Masters of Sex", actor Michael Sheen; musical guests Superchunk.
Comedian and actor Kevin Nealon; from Broadway play "Romeo and Juliet", actress Elizabeth Olsen; musical guests The Avett Brothers with Chris Cornell.
From "Super Fun Night", actress Rebel Wilson; author of "Break Out!", Joel Osteen; musical guest Lorde.
From "Parkland", actor Paul Giamatti; from "Runner, Runner", actor Anthony Mackie; musical guests MS MR; guest announcer Horatio Sanz.
TV host and journalist Meredith Vieira; chef Mario Batali.
From "Crash and Burn", actor and comedian Artie Lange; from "Enough Said", actress and fashion blogger Tavi Gevinson; musical guests Phantogram.
Interview with and performance by musician Sir Paul McCartney; from "Hostages", actor Dylan McDermott.
Interview with and performance by singer and actress Miley Cyrus.
Actor Alan Rickman; from "Carrie", actress Chloë Grace Moretz; animal expert Jeff Musial; musical guest Ylvis; musician Cassadee Pope sits in with The Roots.
Singer Katy Perry; author of "The Can't Cook Book", Jessica Seinfeld; musican guests Brian Wilson & Jeff Beck.
From "Man of Tai Chi", actor Keanu Reeves; from "The Fifth Estate" and "12 Years a Slave", actor Benedict Cumberbatch; musical guests My Morning Jacket feat. Brittany Howard & Merrill Garbus, with horns from Antibalas.
From "Up Late with Alec Baldwin", host and actor Alec Baldwin; actor Kevin Connolly; musical guests Chris Cornell with The Avett Brothers. Pearl Jam Week (show no.1)
From "Jackass Presents: Bad Grandpa", actor Johnny Knoxville; from "Romeo and Juliet", actress Hailee Steinfeld; musical guest Robin Pecknold. Pearl Jam Week (show no.2)
From "Modern Family", actress Julie Bowen; from "Homeland", actor Mandy Patinkin; musical guests Dierks Bentley with Mike McCready & The Roots. Pearl Jam Week (show no.3)
Actor Edward Norton; from "Anchorman 2", producer Judd Apatow; musical guests Pearl Jam. Pearl Jam Week (show no.4)
From "The Counselor", actor Javier Bardem; interview with Eddie Vedder; musical guests Pearl Jam. Pearl Jam Week (show no.5)
Actor and musician Hugh Laurie; interview with and musical performance by singer Celine Dion.
From "Big Sur", actress Kate Bosworth; author of "What's So Funny?: My Hilarious Life", actor and comedian Tim Conway; musical guests Chromeo.
From "Parks and Recreation", actor and comedian Aziz Ansari; from "Almost Human", actress Minka Kelly; musical guest The Weeknd.
From "Scandal", actress Kerry Washington; actor Jason Schwartzman; 14-year-old chef Flynn McGarry; musician Amel Larrieux (feat. Sky Larrieux) sits in with The Roots.
From "Ender's Game", actor Harrison Ford; from "Top Chef", Padma Lakshmi; musical guests Big Sean feat. Kid Cudi.
From "The Mentalist", actor Simon Baker; Sen. John McCain (R-AZ); musical guests The Dismemberment Plan.
From "Elementary", actress Lucy Liu; actor Zachary Quinto; celebrity chef Giada De Laurentiis.
Actor Jason Statham; comedian Tom Green; musical guest Emeli Sandé.
From "The Rachel Maddow Show", host and journalist/author Rachel Maddow; interview with and musical performance by M.I.A.
From "Thor: The Dark World", actress Natalie Portman; actor Taye Diggs; stand-up comedy by Nate Bargatze.
From "700 Sundays", actor Billy Crystal; from "Charlie Countryman" and "A Case Of You", actress Evan Rachel Wood; musical guests Cher Lloyd feat. Skee-Lo and The Roots.
Singer Mariah Carey; bestselling author Malcolm Gladwell; musical guests Capital Cities.
From "Law and Order: Special Victims Unit", actor and rapper Ice-T; Sony PS4 video game demo; musical guest Thomas Rhett.
From "Homeland", actor Damian Lewis; from "Philomena", actor Steve Coogan; musical guest Sheryl Crow; singer Wanz sits in with The Roots.
From "Blue Bloods", actor Tom Selleck; from "The Hunger Games: Catching Fire", actress Jena Malone; musical guest Johnny Marr.
From "Far From Finished", comedian Bill Cosby; musicial guest Bonnie Raitt.
From "Black Nativity" and "Out of the Furnace", actor Forest Whitaker; TV personality Andy Cohen; musical guests Cut Copy; musician Brad Whitford sits in with The Roots.
From "Nebraska", actor Will Forte; Xbox One video game demo; musical guest Charlie Wilson.
From "The Hunger Games: Catching Fire", actor Liam Hemsworth; from "Saturday Night Live", comedian Bobby Moynihan; musical guest Sleigh Bells.
From "Sarah Silverman: We Are Miracles", comedienne Sarah Silverman; from "The Hunger Games: Catching Fire", actor and musician Lenny Kravitz; chef Michael Anthony.
From "Live! with Kelly and Michael", co-host Kelly Ripa; from "The Sound of Music Live!", actor Stephen Moyer; musical guests Mazzy Star; musician Jake Clemons sits in with The Roots.
From "The Hunger Games: Catching Fire", actor Josh Hutcherson; founder of the Improvisation Comedy Club, Budd Friedman; musicial guest Kelly Clarkson.
From "Mob City", actor Ed Burns; from "Lilyhammer", creator and actor Steven Van Zandt; animal expert Jeff Musial; musical guests Florida Georgia Line.
From "Parks and Recreation", actress Rashida Jones; from "The Sound of Music Live!", actress and singer Carrie Underwood; musical guests Ariana Grande feat. Mac Miller & The Roots.
From "American Hustle", actress Amy Adams; from "Inside Llewyn Davis", actor Oscar Isaac; musical guest Jack Johnson.
From "Animal House", actor John Goodman; from "Downton Abbey", actress Michelle Dockery; musical guests Yo Gabba Gabba.
From "Her", actor Joaquin Phoenix; actress Candice Bergen; musical guests Iron & Wine and Calexico.
From "Saving Mr. Banks", actress Emma Thompson; from "Anchorman 2", actor James Marsden; musical guest Kelly Clarkson.
From "The Invisible Woman", actor Ralph Fiennes; from "August: Osage County", actress Juliette Lewis; musical guest Austin Mahone.