Great setup! Now let me chime in on the whole XBOX discussion from a little earlier in this thread. It is so sad how so many audiophiles and HT enthsiasts are unaware of the glorious black box that Microsoft has brought to us. First of all, to interact with the content that is rendered in Dolby 5.1 in real time as you play is truly incredible. Heck, it is the closest thing to being a sound engineer right? Many a time I will come across a sound effect like a waterfall or the roar of an engine and I will have my character on the screen spin around and listen to the sound spin around me from one channel to the next. Talk about a blast. If that isn't enough to get you in board, try this on for size. The XBOX supports HD resolutions! So, if you've got the TV to display it and the game supports it, then you are gaming in better than DVD resolution folks.
I would suggest for visuals in HD go for Ninja Gaiden, Dead or Alive Ultimate and Splinter Cell Chaos Theory.
For sound check out Halo 2, Riddick, Burnout 3
Also note that the new XBOX, called the XBOX 360 will be out in November and Microsoft has mandated that all games to run on it mus run at HD resolution. I don't know about you, but I am stoked.
Here's a link for all you need to know about XBOX stuff http://www.teamxbox.com
Jay