What serious home cinema type uses a TV?
Home cinema is a front projection screen more then 80" or so, seating at 1.2x screen width, and with real surround sound, not that shit where the speakers come in the same box as the amplifier. Oh, and a pitch black room. Most theaters now seem to have 50 exit signs of street-light level brightness, but that sure as hell isn't in the specs. Neither is moonlight coming in your window! For christ's sake, people, it's just not the same when you see a reflection of your buddy opening the fridge, just as the joker is asking, "Why so serious?"! People, have some self-respect!
A television for a home theater?! I mean, really, when was the last time you went to the movies and they had a light transmitting display? You want to watch a movie, fine... a tv will work. If you want to watch it like the director intended, you need front projection, big-ass sound, a totally isolated, dedicated environment, and the first two calibrated to perfection. This does -not- mean setting 'cinema 1' and calling it a day. It's wrong. Throw that shit out, get a colorimeter, and learn to do it yourself.
See, that's "home theater enthusiast" - someone who wants to watch movies -right-. Having a kick-ass TV is just watching movies a bit less wrong.
It's not like non-home-theater people are stupid for not doing all that stuff, it's just that something set up in your living room with a TV just ain't home theater, any more than putting your netbook on the coffee table is good television.