Jimmy Fallon and The Tonight Show do a hilarious mashup of broadcast clips that make it seem like NBC's Brian Williams is rapping "Gin and Juice" by Snoop Dogg. Fallon has done a few of these mashups of the straight-laced Nightly News anchor already. His last one aired during his first week behind the desk on The Tonight Show, which featured Williams and Lester Holt rapping "Rapper's Delight."