Hey, I'm thinking the green screen that you're getting may be the box's or whatever-you-have's sleep mode. That's just a guess though. I'm basically just telling you about the pixelated part. Assuming you have an LCD tv, then that is normal. You will also notice alot less if you sit about 10 feet away from the tv. I too just got HDTV today from Charter Digital Cable. Everything looks great on it except it has ghosts (layers of an image coming off of the main image) around objects in bright scenes. I'ts really not that much of a biggie though. I have a 37" Magnavox LCD TV. The HD does reduce the Jaggedness of the lcd, but you will never be able to get rid of all of it. That was one reason that I was looking at Plasma screens rather than LCD screens, but in the long run, LCD just has a longer life-span, therefore I bought the LCD. Depending on how bad your jaggedness is, you decide to take it back or not, depending on how long you've had your set.