Chalk this one up as a novelty, because the usefulness is pretty low. HowToGeek (and by extension, an XDA forum member) have posted instructions for how to boot your PC into Android. The process isn’t too excruciatingly tricky if you’re willing to just burn the ISO to a CD, although if you opt to run Android from a USB key, you’re in for a slightly more involved process.
Once installed, things seem to work pretty normally – according to HTG, this includes cameras and Wi-Fi, depending on what you’re using. Also (and rather surprisingly), they had some minor issues with some effects (opening menus, etc) stuttering.