Optimus keyboard has a little display built into every keyface, so that it can dynamically display what the key is being used for. Although this could conceivably have a practical purpose, in switching a keyboard between alphabets, of course what everybody actually is going to use it for is games (assuming they actually produce it).
Cool Keyboard
Tales of the Rambling Bumblers 
It's a great idea… the main problem is that I'm going to go to great lengths in the future to continue to use an ergonomic keyboard for significant work (I haven't had to use wrist braces in the 2 years since I've replaced my work and home keyboards) and it seems expensive just to have as a fancy game-pad.
Now make one for me where I'm not in a lot of pain at the end of the day and I'm there…
Well, according to the site, they plan on making an ergonomic version of the keyboard “some day.”
I'm already in love with this keyboard. I'd like to say I'll hold out for the split version (split keyboards R teh roxxor), but I'd have to see an actual production model before I can hold out for anything.