I have Directv with the HD package, and a Samsung HLP5063 tv, and the "real" HD channels(Discovery HD Theatre, HDNET etc.)look awesome, but the SD channels and even some of the major networks that are "HD" get this kind of "flicker" or shimmer, I guess you could call it, especially around certain text, and certain colors, and I know it's not the tv, because Samsung just replaced our tv for issues that couldn't be related to this, and this one shows the exact same thing, which almost has to rule out the tv. Could it be my satellite receiver or ??? We have the RCA one that came with the HD upgrade. It doesn't happen all the time, but I don't think it is normal. Anyone have a clue. Oh, and I'm using DVI from satellite to tv, and the receiver is set to 1080i. Any feedback appreciated. Thanks in advance