I hate to disagree w/ the Fred's advice, but not only do some people NOT get use to a screen that is too big from where thay can "get away" from the secreen, but some get headaches, eye strain, and nausea. Often, the culprit is NTSC material (non-HD) that is just not very sharp blown up to a big size...compression from satellite is another culprit. Another point is that it is a fallacy that you can sit nose-to-screen from a RPTV screen. From a too-close distance, you can still see scan lines/pixels.
Fred's right in that there is some adaptation, but recommended distances are for a reason. I was just in a tv store last weekend, and a family was really pitiful in there- they were begging to bring a 55" back after one week...willing to "swap out even" for a 50" as they were complaining of headaches and eye strain...and the sales guy was not very sympathetic!:rolleyes:
Do some watching in the store, w/ a tape measure in hand and then go home and measure how far you need to be back to, at the minimum, avoid noting scan lines/pixels.
Don't buy a TV at a size you "want"...figure out what your room will accommodate (viewing distance from screen) and then buy what fits.