You can download this video in high-def with the text sharp and readable: http://wiki.linuxmce.com/index.php/Video
Running on Kubuntu, Linux MCE is probably the most advance Media center in the market, and probably the best option for your digital home… if you are a Linux savvy.
I must admit that installation for the Linux MCE is straight-forward. Now, the configuration of many of the features in the video, including simply to discover media in other PCs in your network, might take some more time and IT skills.
Nonetheless if I get it to do what it promises, this is really the Media Center and Home Automation system of my dreams.
There is a more simple option that installing yourself: Fiire builds HW with Linux MCE pre-installed. Fiire is the vendor of the gyro and the thin media extenders in the demo video.
Although somehow overpriced, I must admit that the product definition from the Fiire guys is outstanding.