Gave
BumpTop a try, now that the mac version is out. It's not bad? Honestly I could see myself using it if it allowed piles on walls. I understand why they left that out of a physics-based desktop, but I know that I pin piles of things to walls? Otherwise I may as well get a lot of the same experience out of things already built into OSX.
It is pretty snazzy looking, as long as iTunes or something isn't ruining the 3D illusion