Here I have OD and VixWin Pro on different faces of a 3D cube in Ubuntu. I can freely rotate the cube to select a face of the cube as the active desktop, at which time it will maximize to fill the screen.
I can even have a video playing in the background *as* the desktop wallpaper (not in a window). Wow!
It's even cooler when you see it in action--- I have made a video of my desktop - if I can ever figure out how to get it in the right format I'll upload it to YouTube or Google so you can have a look...
Bill Starck, DDS