Personally having had a few hours using the Phillips 21:9 TV I think it's just plain stupid and does not offer any benifits over a 16:9 TV. Firstly the TV is uber wide and if watching standard TV on it the actuall screen size is smaller than a 42" TV, and the biggest falure with the TV is that the screen is not a perfect fit for any movie and crops the edges!!
I for one will be sticking with a standard 16:9 TV or a projector with electrically adjustible screen to alter the screen size for diferant aspect ratios.
I've been playing around with a couple of these at work for the last few months.
Have to say I'm not blown away with the picture quality and the scaling system leaves a lot to be desired . . . . and it's way too expensive at the moment.