Well today I put on 2 1080p videos I downloaded from youtube and both ended up appearing kinda crappy.
So I switched through the settings (usb mode) about 100 times in 5 minutes. Again are you guys sure that kind of harsh/constant settings switching doesn't do anything? Cause I swear my tv looks less sharp now.
It looks less sharp because your brain doesn't know what's going on with those images and you couldn't possibly remember what it use to be. Use reset to get back to the beginning. Pick some settings and then stick with them for a week before you even consider what to change. You need to train your eyes and then your brain will tell you what doesn't look right. During that week do not touch the sharpness (lower is better-always) and only turn up the contrast or backlight a little bit if it's uncomfortably dim.
Anyway, that's what I think you should do.
Also, I think you should read something on calibrations or sharpness as it applies to images & lcd televisions on wiki. The only way to get over your fear is to learn.