Interested in a 3D desktop? zoso
submitted news about about a project called Metisse, writing "There is working and freely available alternative to the (soon to be released under GPL) Sun Looking Glass 3D desktop ( Slashdot story here)
If you have spare CPU/GPU cycles just go download and compile the first publicly available version of this X Desktop. Everything looks nice (screenshots here), has OpenGL support, transparency and all other whistles...."