i use a pc as the input right now into my sony and it's set to a 1280x720 res.
this works fine via hdmi and vga.
i'm thinking about the future really and blu-ray etc and assume that they will output 1080 for their movs.
prob is i don't think it will work on my sony (unless i'm doing something wrong). basically to test, i up the res on my pc to 1920x1080 but it doesn't show it properly.
by that i mean, if i use hdmi, the image is the right size but blurry - kind of like 2-3 images overlaid over the other.
via vga - the image is clear but i only get a 1280x720 window that pans across a 1920x1080 desktop

it reminds me of that happened on my old laptop when i resized the res to something higher than it could support.
to me anyway it doesn't look like my sony will take a 1080 res for some reason?