Jennifer Lopez was the most commanding diva in a room full of 'em. The heavy electro beats of her shockingly awesome new single, "Do It Well," hit harder than anything she's put out since, say, "Waiting for Tonight" - a sweeping trance remix of which was her second song of the night. For just a few minutes, Radio City became the pulsing, strobe-lit dance club it was (sorta) meant to be. Didn't I tell you J.Lo can't be stopped?









