Jimmy Fallon May 10, 2018 1:45 am ‘Tonight': Fast Dance-Off With Jennifer Lopez Jennifer Lopez and Jimmy Fallon take turns making up fast dance moves to the least danceable ’70s slow songs The Roots’ Questlove could find. US & World Videos 1:49 Finalists in math competition hope their model helps ease housing crisis 14:31 @Issue extra: Seth Moulton on pro-Palestinian protests, TikTok and more 2:31 Celtics preparing for pivotal Game 3 against Heat in Miami 1:17 Patriots player visits Franciscan Children's Hospital 5:54 Pro-Palestinian protest taking over college campuses