Lifestyle expert Martha Stewart; actress & comedian Ana Gasteyer.

Actress & singer Jennifer Hudson performs and is interviewed; actor Patrick Wilson.

Author Stephen King; pro basketball player James Harden; singer-songwriter Sam Hunt performs.

Actor Andy Samberg; actress Emily VanCamp; humorist Roy Wood Jr.

Comic Michael Che; actress Rosamund Pike; indie rock band Colony House performs.

Actor Nathan Lane; singer Weird Al Yankovic; director Garry Marshall.

Actor Neil Patrick Harris; actress Rita Wilson; indie rock duo The Both performs.

Comic Sarah Silverman; actor & comic John Mulaney.

Actor James Spader; actress & comic Rachel Dratch; English synthpop duo La Roux performs.

Actor Jeffrey Tambor; actress Retta; "Impractical Jokers".

Actor Matthew Broderick; actor Zachary Quinto; English indie rock band Glass Animals performs.

Actor Robert Downey Jr; actress Emmy Rossum; comic Chris Gethard.

Actress Minnie Driver; actor Ike Barinholtz; country music duo Florida Georgia Line performs.

Actor & comic Dane Cook; actress Nasim Pedrad; writer Azar Nafisi.

Actor & comic Artie Lange; TV personality Nicole Richie; English rock duo Royal Blood performs.

TV Host Rachel Maddow; Matt Ryan; comic Wyatt Cenac.

Singers Carrie Underwood and Brad Paisley; actor Mark Consuelos; rapper T.I. performs.

Actress Amy Poehler; author George RR Martin; English singer-songwriter Captain Sensible performs.

Actor Edward Norton; author Michael Lewis; singer-songwriter Jessie Ware performs.

Actress Zooey Deschanel; actor Ken Marino; author Brad Meltzer.

Actress Kerry Washington; actor Michael C Hall; author Joe Hill.

Actor & comic Martin Short; model Coco Rocha; humorist Simon Rich.

Actor Elijah Wood; actress Cecily Strong; singer Ella Henderson performs.

Actress Eva Longoria; actor Rob Riggle; Irish musician Hozier performs.

Actor John Lithgow; actor Ben Feldman; singer-songwriter Jenny Lewis performs.

Actor David Hyde Pierce; Sen. Elizabeth Warren (D-Mass); actor Matt Jones.

Actor Jack McBrayer; actor Gael Garcia Bernal; rock band Ex Hex performs.

Actor Taylor Schilling; playwright Aaron Sorkin; comic Mike Lawrence.

TV host & comic Steve Harvey; actor Robin Lord Taylor; singer-songwriter Elle King performs.

Former pro basketball player Shaquille O'Neal; actor Eddie Redmayne; entrepreneur Gary Vaynerchuk.

Actress Keira Knightley; sportscaster Al Michaels; South African singer St. Lucia performs.

Actor & comic Russell Brand; actress Mayim Bialik; comic Fahim Anwar.

Actor John Goodman; actor Aasif Mandvi; post-punk revival rock band Interpol performs.

Actor Jason Sudeikis; actress Aubrey Plaza

Actress Allison Williams; actor Dan Patrick; magician Josh Beckerman.

Seth's family: Larry, Hilary and Josh Meyers

Actor Martin Freeman; actress Eliza Coupe; alt rock band The Eeries perform; musician Bob Mould sits in with the 8G Band

Actress Cameron Diaz; actor Josh Radnor; journalist Richard Engel; musician Bob Mould sits in with the 8G Band.

Actor Mark Wahlberg; fashion designer Diane von Furstenberg; comic Kyle Dunnigan; musician Bob Mould sits in with the 8G Band.

Actor & rapper Curtis '50 Cent' Jackson; actress Patricia Clarkson; singer-songwriter James Bay performs.

Talk show host James Corden; actress Vanessa Bayer; entrepreneur Robert Earl.

Bill O'Reilly; actress Krysten Ritter; British electronic band Jungle performs.

Actor Christoph Waltz; actress Uzo Aduba; comic Greg Warren.

Actress Anna Kendrick; actor Timothy Spall; entrepreneur Martha Stewart.

Actress Jessica Lange; actress Molly Sims; TV hosts Men in Blazers.

Actress Jane Lynch; actress Lucy Hale; singer Jhené Aiko performs.

Actor Matt Leblanc; actor & comic Patton Oswalt.

Actress Kristin Chenoweth; actress Casey Wilson; actor Tony Danza; singer-songwriter Brandy Clark performs.

TV host Michael Strahan; actress Olivia Munn; filmmaker brothers Mark and Jay Duplass.

Former President Bill Clinton; actress Carrie Brownstein; musician Mali Music performs.

Actress Kristen Stewart; actor Andrew Rannells; comic Phoebe Robinson.

Actor Don Cheadle; actress Ruth Wilson; pop duo Night Terrors of 1927 perform.

Actress Lauren Graham; actor Rainn Wilson; comic book writer Brian Michael Bendis.

Actress & singer Jennifer Lopez; actor Nick Kroll; rapper Lupe Fiasco performs.

Actress Felicity Jones; former professional football player Hines Ward; comic Sebastian Maniscalco.

TV host & comic John Oliver; radio hosts Mike & Mike; rapper Kid Ink and singer Elle Varner perform.

Actress Debra Messing; actor Horatio Sanz; chef Mario Batali.

Actress Glenn Close; actress Gabrielle Union; musician J Mascis performs.

Actor David Duchovny; models Candice Swanepoel and Lily Aldridge; comic Brooks Wheelan.

Actor Bobby Moynihan; actors Eugene Levy and Daniel Levy; indie rock band The Bots perform.

Actress Sienna Miller; actress Tracee Ellis Ross; writer Brian Koppelman.

Actor William H. Macy; basketball analyst Kenny Smith; alt/indie rock band The Districts perform.

Actor Kevin Costner; actress Portia de Rossi; Westminster dog show announcer David Frei.

Actress Angie Harmon; folk rock singing duo Two Gallants perform.

Actor Matthew Perry; actress Taraji P. Henson; actor Anders Holm.

Actress Kathy Griffin; actor Peter Sarsgaard; country music band The Mavericks perform.

Actor Zachary Quinto; actress Mae Whitman; fashion designer Carolina Herrera.

Singer Mary J. Blige; actor Stephen Amell; indie pop band Misterwives perform.

Actors Amy Poehler, Aziz Ansari, Nick Offerman, Aubrey Plaza, Chris Pratt, Adam Scott, Jim O'Heir, Retta, and executive producer Michael Schur ("Parks and Recreation").

Singer Christina Aguilera; actor & comic Colin Quinn; comic Kurt Braunohler.

Actor Will Forte; actress Ellie Kemper; alt/indie rock band Sleater-Kinney performs.

TV host Kelly Ripa; director Lee Daniels; indie pop/rock band Echosmith performs; singer Kate Pierson sits-in with The 8G Band.

Actor Tom Selleck; actress Anne Heche; author Marlon James; singer Kate Pierson sits-in with The 8G Band.

Actor Sir Kenneth Branagh; actress Felicity Huffman; electronic pop band Purity Ring performs; singer Kate Pierson sits-in with The 8G Band.

Actress Jada Pinkett Smith; actress Ginnifer Goodwin; actor Robert Smigel; singer Kate Pierson sits-in with The 8G Band.

Actress Keri Russell; Sen. Ted Cruz (R-TX); indie pop band Smallpools performs.

Actress Shailene Woodley; actor Jason Biggs; documentary filmmaker Alex Gibney.

Actress Lena Dunham; sportscaster Erin Andrews; Swedish pop singer Tove Styrke performs.

TV host Jay Leno; actresses Sara and Erin Foster; actor Seaton Smith.

Actor Jesse Tyler Ferguson; actress Christina Hendricks; rapper Charles Hamilton & singer Rita Ora perform.

Actor Ben Stiller; actress Elisha Cuthbert; journalist Chris Hayes.

Actor Jeremy Piven; writer David Benioff; CEO of MOMA Daniel Weiss; Welsh pop band Marina and the Diamonds performs.

Actor Kelsey Grammer; actress Paula Pell; The Count.

Actor Nathan Lane, Actress Kristen Schaal, American singer Børns performs.

Actor Kevin Bacon, actor & comic Chris D'Elia; chef Eric Ripert.

Actor & rapper Ludacris; actor Charlie Cox; hard rock band Dead Sara performs.

Actor Jesse Eisenberg; actor Rob Huebel; British electropop band Years & Years performs.

Actor Kit Harington; musician Adam Horovitz; folk rock band The Mountain Goats performs.

Actor Jon Cryer; actress Kat Dennings; restaurant owners Michael Chernow and Daniel Holzman.

Singer Pharrell Williams; actor Oscar Isaac; folk rock band Delta Rae performs.

Actress Taraji P. Henson; actress Carice Van Houten; comic Keith Alberstadt.

Actress Helen Mirren; ski racer Lindsey Vonn; English punk rock band Buzzocks perform; Arcade Fire's drummer Jeremy Gara sits in with The 8G Band.

Actor Ethan Hawke, actor Kumail Nanjiani; country singer Dwight Yoakam performs; Arcade Fire's drummer Jeremy Gara sits in with The 8G Band.

Actress Blake Lively; actress Gina Rodriguez; singer-songwriter Jessie Baylin performs; Arcade Fire's drummer Jeremy Gara sits in with The 8G Band.

Actor Russell Crowe; actor Seann William Scott; actress Emily Heller; Arcade Fire's drummer Jeremy Gara sits in with The 8G Band.

Actor James Spader; actress Jane Krakowski; English indie rock band The Wombats perform; Bleachers' singer & musician Jack Antonoff sits in with The 8G Band.

Actor John Cleese; actress Linda Cardellini; politician Barney Frank; Bleachers' singer & musician Jack Antonoff sits in with The 8G Band.

Comic Chelsea Handler; actor John Slattery; Americana musician Shakey Graves performs.

Actress Cobie Smulders; actor Andre Braugher; comic Phil Hanley.

Actress Lily Tomlin; actress Abigail Breslin; comic Chris Distefano performs.

Actor Jack Black; former business executive Carly Fiorina; professional baseball player Pedro Martinez.

Fashion journalist Anna Wintour; country music singer Willie Nelson; indie pop singer Twin Shadow performs.

Actor Josh Hartnett; journalists Mika Brzezinski & Joe Scarborough; blues rock singer Benjamin Booker performs.

Comic Louis C.K.; TV show host Sharon Osbourne; singer-songwriter Joy Williams performs.

Actress Jane Fonda; actress Leslie Jones; actress Kay Cannon.

Actor Matt Dillon; actress Tatiana Maslany; Arcade Fire's Will Butler performs.

Actress Anna Kendrick; actor Thomas Middleditch; from The Best Show - comic Tom Scharpling & musician Jon Wurster.

Actress Mariska Hargitay; actress Chelsea Peretti; musician Father John Misty performs; singer Elle King sits-in with The 8G Band.

Actor Eric Stonestreet; actor Mike Epps; actor & comic Nick Swardson; singer Elle King sits-in with The 8G Band.

Professional basketball player Dwyane Wade; actor Kellan Lutz; R&B singer Allen Stone performs; singer Elle King sits-in with The 8G Band.

Model Heidi Klum; actor & comic Richard Lewis; writer Matt Fraction.

Actress Rose Byrne; Sen. Bernie Sanders (D-Ind.-VT); country singer Brett Eldredge performs; Queens of the Stone Age's drummer Jon Theodore sits in with The 8G Band.

Actress Melissa McCarthy; actor Robert Duvall; author Hanya Yanagihara; Queens of the Stone Age's drummer Jon Theodore sits in with The 8G Band.

Actor Alan Cumming; actress Alicia Vikander; English electronic band Clean Bandit and singer Jess Glynne perform; Queens of the Stone Age's drummer Jon Theodore sits in with The 8G Band.

Actress Elisabeth Moss; TV host Cat Deeley; comic Gina Brillon; Queens of the Stone Age's drummer Jon Theodore sits in with The 8G Band.

Actress Edie Falco; rock band Fall Out Boy performs; Queens of the Stone Age's drummer Jon Theodore sits in with The 8G Band.

Actor & comic Jerry Seinfeld; journalist David Remnick; Queens of the Stone Age's drummer Jon Theodore sits in with The 8G Band.

Actor Taran Killam, actor Hugh Dancy; singer Kacey Musgraves performs; Queens of the Stone Age's drummer Jon Theodore sits in with The 8G Band.

Actress Molly Shannon, actor & rapper T.I.; actor Matt Lucas; Queens of the Stone Age's drummer Jon Theodore sits in with The 8G Band.

Lifestyle expert Martha Stewart; actress Laura Prepon; English musician Jamie xx performs.

Actress Amanda Seyfried; director Judd Apatow; chef Katie Lee.

Actress Mindy Kaling; actor Adam Scott; Swedish singer Tove Lo performs.

Actress Taylor Schilling; singer-songwriter James Taylor chats, then performs.

Actress Maya Rudolph; actor Joe Manganiello; Scottish indie pop band Belle and Sebastian performs.

Actor Colin Farrell; actor Matt Bomer; journalist Maria Bartiromo.

Actor Channing Tatum; actress Laverne Cox; punk rock band Desaparecidos performs; appearance by actress Amy Poehler.

Filmmaker & actor Seth MacFarlane; actress Bella Thorne; actor Greg Poehler.

Actor Michael Douglas; comic Jim Gaffigan; singer-songwriter Nate Ruess (from the band, fun.) performs.

Actor Ben Kingsley; comic Mike Birbiglia; Sen. Lindsey Graham (R-SC).

Actor Paul Rudd; writers James Anderson and Paula Pell.

Actress Amy Schumer; actor Pablo Schreiber; musician Anderson East performs.

TV personality Ryan Seacrest; actress Vanessa Bayer; comic Chris Gethard; Pixies' drummer David Lovering sits in with the 8G Band.

Actor Adam Sandler; comic Margaret Cho; indie rock band Modest Mouse performs; Pixies' drummer David Lovering sits in with The 8G Band.

TV host Rachel Maddow; actress & model Cara Delevingne; pop rock band Neon Trees perform; Pixies' drummer David Lovering sits in with The 8G Band.

Actor Jake Gyllenhaal; actress Ashley Benson; activist duo the Yes Men; Pixies' drummer David Lovering sits in with the 8G Band.

Journalists Matt Lauer and Savannah Guthrie; professional soccer player Carli Lloyd; indie rock band Lord Huron performs; Rage Against the Machine's drummer Brad Wilk sits in with The 8G Band.

Actors Billy Eichner and Julie Klausner; actor Joel Edgerton; R&B band Vintage Trouble performs.

Actor Ed Helms; cartoonist Alison Bechdel; cast of "Fun Home" performs.

Actress Christine Baranski; actor Colin Jost; comic Michael Kosta; Rage Against the Machine's drummer Brad Wilk sits in with the 8G Band.

Actor Miles Teller; actresses Jessica St. Clair & Lennon Parham; French pop singer Christine & The Queens perform; Rage Against the Machine's drummer Brad Wilk sits in with The 8G Band.

Actor Craig Robinson; actor Michael Ian Black; chef Christina Tosi; Rage Against the Machine's drummer Brad Wilk sits in with the 8G Band.

Actor Jason Segel; actor Michael B. Jordan; rapper Big Sean performs.

Reality-TV personalities Ice-T & Coco; actress Lucy Hale; actor Andy Daly; Rage Against the Machine's drummer Brad Wilk sits in with the 8G Band.

Actress Winona Ryder; actor & comic Colin Quinn; indie rock band Beirut performs.

Journalist Anderson Cooper; actress Greta Gerwig; comic Tig Notaro.

Actress Connie Britton; singer Rita Ora; New Zealand psychedelic rock band Unknown Mortal Orchestra performs.

Actress Kristen Wiig; actor Tituss Burgess; author David Simon.

Actor Bill Hader; news anchor Shepard Smith; fictitious 70's soft rock band The Blue Jean Committee performs; The Smashing Pumpkins' drummer Jimmy Chamberlin sits in with The 8G Band.

Actor Zac Efron; actor Joe Piscopo; country singer Chris Stapleton performs; The Smashing Pumpkins' drummer Jimmy Chamberlin sits in with the 8G Band.

Actor Keegan-Michael Key; actor Tony Hale; pop duo MS MR performs; The Smashing Pumpkins' drummer Jimmy Chamberlin sits in with the 8G Band.

Actor Matthew Broderick; actor John Cena; "Impractical Jokers"; The Smashing Pumpkins' drummer Jimmy Chamberlin sits in with the 8G Band.

Actress Tina Fey; singer Nick Jonas performs; drummer Abe Laboriel Jr. sits in with the 8G Band.

Comic Craig Ferguson; actress Gabourey Sidibe; "Last Comic Standing" winner; drummer Abe Laboriel Jr. sits in with the 8G Band.

Actor Neil Patrick Harris; New York Mayor Bill DeBlasio; pop rock band Panic! At the Disco performs; drummer Abe Laboriel Jr. sits in with the 8G Band.

Actor Andy Samberg; professional basketball player Kevin Love; filmmaker M. Night Shyamalan; drummer Abe Laboriel Jr. sits in with the 8G Band.

Actor Jason Sudeikis; actor David Oyelowo; pop duo Twenty One Pilots; drummer Abe Laboriel Jr. sits in with the 8G Band.

Actor Josh Brolin; candidate for Democratic nomination Gov. Martin O'Malley; writer Judd Winick; drummer Abe Laboriel Jr. sits in with the 8G Band.

Actor Elijah Wood; actor Horatio Sanz; singer Jess Glynne performs; drummer Abe Laboriel Jr. sits in with the 8G Band.

Actress & comedian Carol Burnett; actor Colin Hanks; musician Baio performs; drummer Abe Laboriel Jr. sits in with the 8G Band.

Actor Ed Burns; actor Richard Kind; author Judy Blume; drummer Abe Laboriel Jr. sits in with The 8G Band.