I've seen few of weirdest keybaord online. Laser keyboard are old news!! It had been around for 3 or 4 years!!!
What's missing in website was a Swiss designed "ball" keyboard that cost over $1,000. It sure look like ball with flat bottom but it's very much like an ordinary ergonomic keyboard shaped into ball . If you held a small ball with both hands, it's the same way you cover both hand on ball keyboard. I have seen this 10 to 15 years ago. I don't know why it doesn't show up in google search!??
But I found it in Patent online called Spherical Keyboard which is nearly the same. I was unable to expand the picture because it require to register. You may see small pix of the keyboard. It's not exactly what I saw but similiar to it..