One of the things I'm most glad I did in my room was an AT screen with three matching speakers behind. Initially it was going to be a solid 16:9 with speakers at the sides and one underneath, but I changed that to a 2.40:1 AT during my build, and I couldn't be happier.
My son and his friends play games-- mostly Little Big Planet. No problems with lag or lamp-life. For me, the screen is too big-- I get motion sick.
I know what you mean about this forum being evil-- I came here years ago for tips when I first got an HDTV. After talking to the people here, I've now got a media room with a ten foot wide AT 'scope screen, and furniture that I hacked with transducers.
My side masking panels are made of black Dazian CCC. I made hollow frames and covered them with the CCC. Compared to my velvet, they look dark grey, but with the lights out and projector on, they're black.
I can't hear any difference with the panels on or off.
We did an action/comedy weekend. First it was Big Trouble in Little China, then Land of the Lost.
I'm noticing a number of BluRays that have D-Box motion control codes. I think I'm going to have to upgrade my room.