Now if Apple would only release a media center mini. Upgrade the procs to core2duos and have a dual tv tuner in them. Even if they had to be a bit larger consumers would still eat them up.
Complements on your setup though. I helped a buddy setup a 42" plasma and a media pc with surround sound for Christmas. It looked and sounded beautiful when it was done (wish I had pics!).
I wish my desk was that size my desk is too large and if I had a smaller desk I wouldn't have places to stack messes of CDs, magazines, books, and boxes. A smaller desk would force me to become organized LOL!