If you have a dedicated room you should look into a projector instead of a huge TV. You'll thank me when it comes time to move it. (However the new Toshiba's aren't bad that come in two pieces.)
I'll give you a tip right off the bat. If you like bass, get this:
http://svsubwoofers.com/subs_b4_plus.htm
Basically the best subwoofer on the market right now that isn't going to cost you the same price as a new car.