Unfortunately, HD is still not popular in most peoples eyes. If CSI is on, I find my wife tuned to 243 or something watching a washed out picture rather than flipping to OTA local for some awesome video in HD. Once we get it there, she is like wow, but it isn't on her list of priorities. Our local CBS staion is about the same. I have to call them and let them know their digital signal is down, it will go 2-3 days before it's going at times, they act like it's no big deal. So until HD catches on like DVD's, or a least a faster pace, seems like Dish and others are in no hurry as well, those of us on the HD band wagon will just have to wait. Seems to me it's it a two part problem, lack of interest and lack of marketing or push for those offering or able to offer content.
As far as TNT, most of the stuff they are pushing is crap, replace them with something decent in HD. The voice/picture problem still exists too.
Dish should be a leader in this area, if it's availble in HD, we should be able to get it.