I don't get why my TV is dumb. And why I can't have a Samsung Galaxy XL-S5 with 47" in my living room. If it had some HDMI ports and would be able to switch between TV and megha-smartphone on my wall, I wouldn't ask for much more.
Maybe we're getting there: Here's a 24" tablet that makes a TV obsolete.
(If you can live with such a "tiny" screen)