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.