SphereXP 3D Desktop

Wow!  This is one of the coolest things I have seen in some time.
http://www.hamar.sk/sphere/

A shell replacement for Windows XP that displays your desktop as if you are inside of a large sphere.  You rotate around within the sphere, and instead of minimizing applications, cascading or tiling windows, you change their X, Y, and Z access within the sphere.

By the way, this is a .NET app too.

But, as awesome as this project is now....consider how easy it will be to create this for Longhorn!