RationalCraft brought its surreal Winscape virtual window to market when the Wii was virtually the only game in town for affordable motion tracking.

ENGADGET: Winscape virtual window makes the leap to Kinect in 4K-capable, 6-screen glory (video)

Blue Nile adopted a virtual model, in which it provides a shop window for suppliers yet does not put any of its own capital at risk.

ECONOMIST: Gentlemen prefer buying diamonds online

From there, you can install virtual versions of almost any other operating system--be it an old copy of Window's XP or a fresh copy of the latest Linux-based Ubuntu release.

FORBES: Macworld '09