NBC January 16, 2019 2:10 am ‘Tonight' in PR: Fallon Joins ‘Hamilton' Cast on Stage Jimmy Fallon puts a “Tonight Show” spin on “Hamilton” as he joins the Puerto Rico cast for a special version of “The Story of Tonight.” US & World Videos 2:43 ‘On the Dot' to redevelop stretch of Dorchester Avenue 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