If you want the Ultimate in Media Control, along with X11 coverage and virtually total home control. Take a look at LinuxMCE. I met these folks at LinuxTag in Berlin a couple of years ago and was really impressed. My problem was the limited amount of hardware that it could be run on back then, but, I was able to install it and make it run. I didn't have the time to implement all of it's features, but, I may look at it again someday.
Geez, just looked at the site again, it says it's now an addon to Kubuntu. Before it was it's own distro...I wonder what has changed....Geez, another entry to the to-do list. LOL.
Edit: It's still an iso based on Kubuntu 8.10, I've got to read farther.