Thanks for the replies....to further explain my dilema, the channels I experience this on are true HD 1080i programming. Naturally the standard definition channels have compression artifacts, but the HD channels I am watching are practicly flawless until like I mentioned before, there are fast movements or camera pans. I am using good coax and the best Monster Cable splitter I could find. I'm sure there's not much I can do about it, I just wanted to know if that was normal.