I've read several times that one should sit at least three times the distance from the screen as the screen's diagonal distance. Does anyone feel this guideline can be bent? I'm looking into a Toshiba 42H81, but my room only allows me to sit about 80 inches at the most from it. By the above rule (which, I don't know if it differs for widescreen TV's) I would need to sit at least 126 inches away. What do you guys think?