I have to say, it's a weirdass concept, but I wouldn't mind having it up in my home. If you haven't seen it, Philips MiraVision Mirror TV is pretty much just that: A LCD monitor that, when turned off, is a reflective mirror. Certainly nicer than a big black screen in the bedroom. So it's nice to see that Philips is now offering the TV in 32- and 42-inch sizes. Check for these sometime in the next few months.
Philips MiraVisionTM Mirror TV [Philips]