Jimmy Fallon August 9, 2017 12:16 am ‘Tonight': Derek Hough Reveals ‘World of Dance' Winners Les Twins Derek Hough joins Jimmy Fallon to introduce the “World of Dance” winners Les Twins before their “Tonight Show” performance. US & World Videos 2:52 Severe weather kills at least 5 as tornadoes rip through Midwest and South 0:48 World Central Kitchen to resume operations in Gaza 3:26 Confrontations occur at UCLA campus amid ongoing protests 0:57 Fights break out at UCLA between pro-Palestinian, pro-Israel supporters 8:39 Gina Rodriguez gushes 0ver motherhood with son Charlie