I've seen something like this before... basically what it has is a large lens that magnafies the image of an existing TV set. There's a homebrew version that uses the lens from a large magnifying glass (the old round type).
There's 2 main problems with it:
1) Focus can be a bitch, largely depending on the distance of the TV to the lens and from the lens to the wall. Presumably this product would have some sane sort of way to focus the light.
2) Brightness. You have the same amount of light coming from your TV, but now it's spread out across much more area. If your viewing room is very dark, your TV has the ability to be particularly bright without washing out, or you keep the screen to small levels of visual expansion you'll have tolerable result.
Post when you know how it works. Maybe I'll buy one via your referral if it turns out tolerable.
