I found a couple of amazing cover songs of Tool, A Perfect Circle, and a few other bands. They're all done on piano by a guy named Adam Monroe. He did a piano version of Lateralus, Schism, The Grudge (a clip anyway), Orestes, 3 Libras, The Hollow, A Stranger, Judith (again, a clip), and The Outsider.
This guy is brilliant, and his vocals sound great with the piano. It's like they kind of gel together. It's his own voice too, he's not imitating Jimmy, like a lot of Tool fans try to do. He uses that effect on his piano for the microphone that adds a little touch to it. It's wonderful.
He also happens to have some of his own work on his youtube page as well. I think he's a pretty talented guy. A few other covers are on there, all of them spot on. Check it out, let me know what you think of him.
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I play videogames with a grapefruit on my ****. It helps me get in the zone.