The product is called the Darbee Darblet DVP5000. It is essentially a image processing device that makes micro-adjustments to luminance of selected pixels to improve percieved detail, and subtly enhance the three dimensionality of standard 2D content.
There are a couple of people that sell them. Try contacting Allan at Ideal AV, he's the best bet:
http://www.ideal-av.co.uk/ItemPages/darbee.htm
I have one, as do quite a few people who have contributed to the owners thread ower on AVForum:
http://www.avforums.com/forums/video-scalers-video-processing/1659965-darbee-visual-presense-darblet-owners-thread.html
Opinion is largely divided between purists stating the oft used phrase: "its not what the director intended", and those people that have actually tried it out and are pretty bowled over by the improvement in image quality they bring.
As I say, I have been using one in my system for a couple of weeks now, and the increase in percieved detail on screen, particularly on HD material, is simply astounding. I thoroughly recommend anyone trying one out for themselves - remember distance selling rules state you can return it within 7 days. Its also very easy to hook up and use - an extra HDMI cable is all thats required, turn it onand away you go.
I have certainly seen an improvement on most content (not all, but most), as have many others, even with expensive £25k DLP projectors, and the effects of the device can be set in 1% increments to suit the users preference, across three processing modes.