One easy thing you can do is put some glowing LED or computer case lights behind your screen. It's called "bias lighting". You can buy professional kits or buy the components off the internet and make them yourself which is really inexpensive. Here are some older pictures of my home theater room that show it in action:
Also, there is a home theater thread here on tron-sector which I started (link below). If you have the chance post your setup, I would love to see it! Take care and let us know what you decide on doing.