I think Windows 8 will be great for people like me with Home Theatre setups, with the big tiles everything is a lot easier to see. I hope MS puts a lot of effort into MCE as I can see them becoming the Apple of Media consumption. Once the online store starts selling Music and Movies etc, I can see people buying Windows 8 just to have an excellent Home Theatre system.
I'm looking forward to all kinds of Apps to make the Home Theatre experience even better.