I know this thread is really, really old. Im sorry to bring it back up, but ever since I have seen it, I have wanted to post up my desktop!
This is Ubuntu Feisty Fawn 7.04 running Beryl windows manager with the Avant Window Navigator Dock.
This is the desktop cube, useful for separating tasks
One of the many 3d rendered effects, wobbly windows. Now my GeForce 6600GT doesnt need to sit idle all the time.
Handy expose feature. Maybe taken from Mac's, but still kick ass.