Jimmy Fallon March 23, 2018 3:09 am ‘Tonight': History of TV Theme Songs With Will Smith Will Smith and Jimmy Fallon perform a live remix of some of the best sitcom theme songs of all time, including Will’s classic “Fresh Prince” theme. US & World Videos 20:50 Karen Read trial: How accounts of first responders have differed 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