The MDT651S sports both front and rear ambient light sensors.
Do you need the Mitsubishi MDT651S in your home? Probably not. And more to the point, since it's a commercial grade product, it probably costs more than you're willing to shell out for a 65 inch screen. But it's got some very cool features.
Take the built-in CAT5 receiver for instance. If you're running a high definition signal more than 50 feet or so, that's an essential. You can grab an HDMI to CAT5 converter and then go the rest of the way with CAT5, not even needing to convert back.
The coolest feature of the MDT651S, and one that may or may not be useful in the home, is the pair of ambient light sensors. Most TVs only have sensors on the front, but the MDT651S adds one to the back, to adjust for lighting conditions on both sides.
It's available now through select dealers at prices starting around $8,000.