The NBC Nightly News anchor showed off his soulful side on Tuesday's Tonight Show Starring Jimmy Fallon. There, Williams teamed up with the late-night host and The Roots to slow jam the news of what's happening with President Barack Obama's immigration reform.
This time, though, the veteran journalist was musical without the help of clever editing. Meaning? He actually joined Fallon and The Roots in Studio 6B, and—get ready—even sang a riff on Sir Mix-a-Lot's "Baby Got Back!"