NBCUniversal Inc. September 27, 2019 4:09 am ‘Tonight': Joke-Off With Michael Che, Colin Jost Michael Che and Colin Jost interrupt Jimmy Fallon’s monologue and challenge him to a joke-off. 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'