I just went from a 52" LCD to 65VT60. I do feel a bit like the TV is "overtaking" its space. It seems so big right now but the 52" seemed big when I first got it. I'm sure I'll get used the the 65". From the couch, it's about 11-12 feet to the screen. I had originally ordered a 60" but didn't want to regret not go bigger when I had the chance.
WOW! I'm in the same camp. Went from a 47" LCD and worried that the 65" would not fit the space but now that it's here, I wish that it came in a bigger size (and I'm WAY closer to the screen - like 5 -6 feet).