David G. is Down with Mary J.

David Gregory got to take advantage of one of the big perks of filling in for Today show co-anchor Matt Lauer — you get to dance! This morning, Mary J. Blige performed in Studio 1A, and Gregory was on hand to dance along.

This was not the first time Gregory’s moves were on display, however. Someone tell ABC there’s a better NBC news guy ready for next season…

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