Best HDTV for gaming under $800



My roommate and I are going to put some funds together for a new HDTV and we have about $800 to spend. We're hard core gamers, probably spending 2-4 hours a day playing Xbox 360 so we're going to want an HDTV that can handle fast paced action. We want 1080p, 16:9, and internet capability. Any recommendations would be cool.
What size do you want??

I'd go with a Plasma for sharp colors, picture quality, and fast switching phosphors. If I were in your shoes, the Panasonic VIERA TC-P50U50 would be at the top of my list for $799.99. It doesn't have internet built-in, but that's easily solved for $50 with a Roku (much better than 99% of all internet TV options).