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 Skarsgård; 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.