NBCUniversal October 14, 2017 2:58 am ‘Tonight': Dance Battle With Blake Lively Blake Lively and Jimmy take turns using the dance move generator to make up random dances on the spot, like the “Ballerina Who Keeps Dropping Marbles” and the “Riverdancing Frankenstein.” US & World Videos 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 2:47 AI pharmacist? Brigham testing new tech to assist docs, pharmacists 1:39 Patriots superfan slams Tom Brady's ‘crap autograph'