Just discovered this awesome performance of
QOTSA - Misfit Love from The Henry Rollins show:
http://youtube.com/watch?v=sYw0KhwXdAY
I really believe these guys are the greatest hard rock band going right now.
They are very good, but for my choice, I can't really decide who is the best right now, but it would be one from this list of bands:
Slipknot, Seether, Saliva, Three Days Grace, Adema (very underrated I think), Puddle of Mudd, or even Godsmack or Static-X. Becks would undoubtedly go with Disturbed or Godsmack. Some of those bands maybe are more "metal" than "hard rock" though.
I think what QOTSA is missing (at least for me) is having at least one MEGA-HIT defining song that I just go crazy for. The closest to that (again, IMO) would be "Go With the Flow". But yeah, I certainly do like their music and try to keep an eye on their stuff.