Jimmy Fallon is known for his comedic music renditions on Late Night with Jimmy Fallon.

From the viral sensation "The History of Rap" which features Justin Timberlake, and "Slow Jam the News", which has featured the likes of President Obama.

Last night, Fallon debuted a new viral hit. Brian Williams, anchor of NBC Nightly News, as a gangster rapper. In this hilarious mash up of news reporting, and Snoop Dogg, Brian Williams raps the Snoop hit "Nuthin but a 'G' Thang', while reporting the news.