I still haven't taken the HDTV dip, but I've come really close several times. I'm sure I'll buy one by year's end. But why does every HD display I've ever seen -- whether at Best Buy, Circuit City, Costco, wherever -- display a slighly jerky motion when objects move from side to side? Also, a sort of pixelization or graininess seems to appear when objects move quickly. I see this on $5000 models as well as $700 models. I see it with BluRay and HDTV. I check the back of the sets, and they do appear to be hooked up via the HD inputs. They just never seem to have the natural, smooth movement of analog TV. What causes this?