I know that this has been around awhile, but I just found it. A very cool app that let's vista users emulate mac's expose. I tried it out and love it! I would say it beats the pants off "Flip3D" and gives users a nice alternative to the M$ default. Here is the link:
Hope everyone else enjoys this as much as me.
Any sufficiently advanced technology is indistinguishable from a rigged demo.