On my mits 55inch tv if you walk up to it, on any programming and look down at an angle about within 2 feet... the middle of the screen up to the top kind of has a rainbow effect?! but you don't see it anywhere else other than the center, and it's not noticible (that I know of) when sitting down. I run my hd box with dvi, and have calibrated with digital vid ess. It's prolly not a big deal at all, but I just noticed it after 3 months and it's wierd. anyone? anyone?