All hail Desktop Sphere!
Finally, onestone has managed to code the desktop sphere many people were waiting for! He wrote about it on his blog. It's quite a neat plugin, and also merges the cubecaps plugin with the cube addon plugin, making for less plugins to worry about (the cubecaps plugin was sort of minor in the configurations, anyway).
Only available in git of course, but great to try out for those of us who have access to that ;)
And digg it too so others know: http://digg.com/linux_unix/Compiz_Fusion_Truly_Spherical_Desktop_View_Arrives
Blog post: http://dev.compiz-fusion.org/~onestone/blog/?p=10
Edit: sorry about messing up the planet, it's an annoying bug :(
Edit 2: To clarify, the sphere is available in the "Cubeaddon" plugin.