Can anyone relate their experiences with Comcast's HDTV broadcasts? I am moving to Arlington in June, supposedly just in time for Comcast to start transmitting HD through their cable network. I am 99.9% sure I am going to sign up, unless someone here thinks it's not worth it. I don't know any of the details; I've only read the press release from mid March or so. They talked about a June rollout, so hopefully that is still on track. My XBR450 has heretofore been wasted on a DirecTV feed that is split between all the condos in my building (picture quality is horrendous, with no option to upgrade the dish or receiver). I am drooling at the thought of a high def picture, even though I've never even seen one on my specific model TV. For that matter, does anyone have the XBR who actually feeds it a high def signal? Is it a big waste of money for a nice TV to watch DVD's on (like I'm doing now), or is it going to be worth it when I get hooked up?