Not sure how much you want to spend, but these guys seem to have the next generation of centralized digital media distribution, & content control.
http://www.hometoys.com/htinews/feb06/articles/mediabolic/media_servers.htm
I've been looking into this as well for myself. I'd like to be able to access the content wherever I am with just a remote. So, if you're up in bed, and remember you have the latest episode of your favorite program recorded on your DVR downstairs, and you want to watch that instead of the news, I'd like to be able to use the remote and select where I want to stream the content.
And, of course while I'm dreaming, pull up a recorded movie, play a selection of music on demand wherever I am.
But, convenience costs a few thousand dollars more than I'm willing to spend. So, I hoof it downstairs to watch what's been recorded...(sigh)...someday.