YES. Best cover of that song I've seen yet. I can't enjoy Metallica-style metal like the OP's video anymore. Personally I really like the original too, and Poker Face, although it gets a bit cheesy beyond those two. Lady Gaga is a LOT better than most of the shit on the radio these days IMO.
And I lol's SOOO FRUCKING HARD at the Louis Armstrong video!!
I'm not much of a Lady GaGa fan, but I will give credit where it is due. She is a very talented pianist, however she should try and find her own identity in music rather than rehash Ace of Base and Madonna.