Cee-Lo on Letterman

Maybe it was the all-female, interracial band in orange outfits that matched Mr. Green's crazy nuevo zoot suit, or that fly, ferocious  pint-sized drummer snapping out the beats and cymbal crashes with a half-smile/half-grimace, or that great guitar lick lifted from... where? Steve Cropper? later?.... or Cee going down on one knee (very carefully) coming into the last chorus, or, okay, the overhead shot of the keyboardist's cleavage as she played one board in each hand (a Letterman camera-angle first?), or maybe it's just a great fucking song. Couldn't figure out how they got around the title. Was he singing "forget you" at one point?