TONIGHT September 11, 2019 5:09 am ‘Tonight': History of Music Video Dance With Jennifer Lopez Jennifer Lopez and Jimmy Fallon whip, Nae Nae and Hammer Time their way through some of history’s most iconic music video dance moves. US & World Videos 1:45 NYPD enters Columbia University in riot gear to clear protest 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look 1:49 New guidelines say women should be screened every other year for breast cancer starting at 40 2:28 King Charles returns to public duties amid cancer diagnosis