Mike Judge -- the mega-genius behind "Beavis and Butt-Head" and "King of the Hill" -- blinded us with awesomeness last night ... by busting out the voices of THREE of his kick-ass characters!!!

Judge -- who's about to release NEW episodes of "B & B" -- was hanging out at the Andaz Hotel in L.A. when he gave us a sweet, sweet taste of Beavis, Butt-Head, AND Hank Hill.


Your move, Seth MacFarlane.