Came across your "Black" thread and had to leave a comment,
I recently added flat black around my screen and the ceiling, also added black curtains to the sides and top of the screen.
The result is simply amazing! My 92" screen hangs in a 4 foot recess with angled walls, in effect it has become a large completely black recess, sort of a shadow box,
(the basement foundation walls are in a bow window shape )
This recessed area fits the screen perfectly, anyway....blacking things out was the best improvement I have ever made!!
The picture pops off the screen, brights are bright and darks are dark wow!!!
My front, centre speakers & sub are all black and have "disappeared into the black hole....."
The interesting thing is that the screen now seems to float and acts like a window it's hard to explain.
People walk up to the screen and are not sure how far back it is they put there hand up and have to keep walking a few feet before they touch it.
As well ambient light has much less of an effect, my room is completely light controlled but now I can easily leave a couple of lamps on while we watch a movie or play Xbox 360.
While this may not be an option for some it worked out great, I didn't have to paint the whole room, and the WA factor wasn't hard to deal with after she saw the picture....
Just my 2 cents