Now here is a keyboard that has me drooling. And hardware peripherals aren't exactly something that gets me started usually.
But the idea of a re-programmable keyboard, who's keys display exactly what they control in realtime sounds pretty cool! Now, I'm sure you'd have to do some work getting the proper pictures set up if you were creating a new key mapping for a program, but the reward might be worthwhile!
But, conversely, I can see this getting hijacked as well. One moment you are browsing the web normally, and the next your keyboard is displaying all kinds of NSFW images all over it! Very not cool! But, in the end, I'd buy one if it was available today. (Assuming infinite resources!)