I heard about these on the internet and was intrigued enough to find out more. I found a helpful soul (thanks Charlie) who sent me a unit from America and the rest is as they say history.
The Unit:

I must admit I have never really been interested in computer games (and that it still the case). However if I were to be then certainly having a stereo playing field adds another dimension (sorry) and it has to be said that the games I have seen thus far are very playable and the unit as a whole has stood up to some rough treatment from our kittens (not to mention standing up to a trip accross the Atlantic).
The screen (This does the unit a diss-service as the image is very sharpe and is, of course, in 3D)

STOP PRESS
I have just received a shipment of games from another helpful soul (Thanks Dan). Expect some more reviews soon!