can someone tell me what stretch and/or zoom modes are on this set? i've tried to get the owner's manual from the sony website, and this tv isn't on their television list to get online manuals (too new?). anyway, i also tried to see it at tweeters, best buy, and circuit city, but the only signals hooked up were hd (which were fantastic). any help with learning about the stretch or zoom modes, as well as opinions and experiences, would be greatly appreciated. thanks in advance for your help!