Just found this article; I'll definitely be messing around with it soon, thought it was worth a share for those interested.
Sample Metro On Your Windows PC Before Upgrading To Windows 8
Microsoft is delivering a whole new feel to their operating system with Windows 8 in the shape of the Metro UI. Tile-based, with an elegant typeface, the very future of Windows could ride on the success or failure of this next release.
Naturally there is some resistance to swapping the traditional desktop with this new user interface. After all, things just work as they are with the point and click of a mouse. Yet Microsoft is trying something different and attempting to pioneer a new direction for desktop operating systems. For that at least they should be applauded.
Ignoring questions about exactly how anyone without a touchscreen monitor is going to get the most out of Metro, there are ways in which the interface can be sampled without installing Windows 8 on your computer.
Sample Metro On Your Windows PC Before Upgrading To Windows 8