In the neverending quest to have a home theater that is more like a movie theater, I have been looking for a way that I can move the projector back further from the screen and into the back wall of the theater so that it would be more like a projector booth at the theater and be a little more visually appealing. I have found out that I can get a Long Throw Lens for my projector which would allow me to move the projector back about 4 feet which would work. Here is a link the website with the specs for the lens (in japenese).
Panasonic Long Throw Lens for AE200 / AE300 Projectors

The inspiration for the projector mounted in another room came from Mark Hunter. Read more about the construction of his theater at his website.
Mark Hunter's Home Theater Website - Construction