there's tons of decent looking SFF's out there these days for the living room. there's also cool stuff like http://www.scan.co.uk/3xs/configurator/3xs-swordfish
around and available now (contains 2 pc's, 1 for gaming and one for streaming/web browsing/etc.)
i'd hate to be so tied to a manufacturer, no matter how good it looks (i mean, check mac out!). admittedly, it is stunning looking and a decent idea, but, besides not having to earth yourself when switching components, pc's are pretty plug and play as it is.