I ended my evening by watching GHOST WHISPERER, but the first 20 minutes were a very frustrating experience. The local affiliate kept switching back and forth between HD and SD (so the screen would go from 16:9 to 4:3 back and froth every few minutes. Maddening. At one point, I lost the sound and had to turn on the captions. At the 23-minute mark, things were finally normalized and the rest of the show played well, but that first section was god-awful to watch.
As for the show, wonderful. Very involving and kind of beautiful at the end (which, of course, ended about 10 seconds too early for complete audience satisfaction).