Brian Williams 'Raps' to 'Nuthin' But a G Thang' on 'Late Night With Jimmy Fallon'

The best part of the cleverly edited video of Brian Williams "rapping" the opening lines of "Ain't Nuthin' But a G Thang" that aired on Wednesday evening's episode of Late Night With Jimmy Fallon has to be the consistency Williams' expression — the guy is just SO GOOD at looking smart and concerned and the same time.

Let's hope this inspires Williams to cut loose on the next NBC News airing.

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