Jimmy Fallon December 19, 2018 3:29 am ‘Tonight': ‘I Wish It Was Christmas Today' With Ariana Grande Jimmy Fallon reunites with Horatio Sanz, Chris Kattan and Tracy Morgan to perform their SNL holiday classic, “I Wish It Was Christmas Today,” with special guest Ariana Grande. US & World Videos 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 5:54 Pro-Palestinian protest taking over college campuses