Vulnerable EDM single has been streamed over 250 million times since its January release
Actress talks first records, concerts, plays "Egg Russian Roulette" on 'Fallon'
MSNBC host discusses latest scoop on 'Tonight Show With Jimmy Fallon'
Actor, comedian performed Disney hits with heavy vocal effects in goofy 'Tonight Show' game "Box of Microphones"
British outfit thunders through stark new track from upcoming LP 'Spirit'
Musician teams with host, Roots for adorable rendition of pop hit
Secretary of Education Betsy DeVos, played by comedian Jo Firestone, gives the weather report
Baltimore trio perform new single "Ran" ahead of headlining sets at Coachella, Panorama, Bonnaroo Festivals
Usually harmless "Box of Lies" segment takes on elements of political critique
Questlove and co. also nod to Chic and Christopher Cross during amusing sequence
Singer returns to 'Tonight Show' to sing "Skidamarink" as Ariana Grande, 'Fresh Prince' theme as Minaj
Stewart will host 'SNL' on Saturday while Big Sean just released his album 'I Decided'
"Sure, repealing Obamacare isn't great," says Fallon's Trump. "But at least it didn't land on 'Nuke the moon just to see what happens.'"
Comedians represent their respective home countries in absurd improvised dance battle
Former One Direction member makes late-night solo debut