The Tonight Show Starring Jimmy Fallon Season 4 Billy Crystal, Derek Hough, the winner of ‘World of Dance’, Jessie Reyez Season 4, episode 186 Billy Crystal, Derek Hough, the winner of ‘World of Dance’, Jessie Reyez August 8, 2017 45 min Previous episode Jeff Bridges, Aubrey Plaza, the Roots ft. Bilal Next episode Brie Larson, Marlon Wayans, Brett Eldredge