haunted by the ghost of mc rove

Recently David Gregory appeared on Late Night with Jimmy Fallon. For his walkout music (viewable in the 30-second clip above), The Roots played "He's the Greatest Dancer" by Sister Sledge:

Why? This is fucking why:

Sure looks like David Gregory, the current host of Meet The Press (which means he got the job after this happened), is having a good time dancing to this wonderful, wonderful song about that great American, Karl Rove. I remember seeing this back when it happened. It still pisses me off.
And evidently, it still pisses Questlove off too.