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I am glad to see that you have pointed out how close you need to sit to see the difference between 720p and 1080i\p. I also am glad that you have pointed out how important seating distance is and what THX recommends.

What I think many people forget about is the other half of the equation which is audio. It has its own recommendations for seating distances from the front wall and proximity to the back wall. It also has guidelines for seating orientation, based on room dimensions. So many times I see systems set up any which way with audio taking a back seat to asthetics and display position.

I would like to see a more holistic approach taken so that one can acquire, or at least consider, the two parts of what makes a great home theater experience.