It's kind of hard being Snoop D-O-double-G, unless you're Brian Williams anyway.
After a huge lip sync battle with Will Ferrell and Kevin Hart, Jimmy Fallon kept his week of big shows rolling with another rap mashup of the "NBC Nightly News" anchor. This time around, Fallon's team edited clips of Williams to have him perform Snoop Dogg's classic "Who Am I (What's My Name)?"
"The Tonight Show Starring Jimmy Fallon" airs weeknights at 11:35 p.m. ET on NBC.