You would think by now that I would understand this. How come on most of the hd only channels (dsc,smithsonian,mgmetc...) the hd picture is always 16.9 or fits the entire widescreen tv. If I go to espnhd or lets say a regional sports network the picture looks like a square (4.3?) even in hd. On one of my sets I cant even change the view (wide zoom full etc...) Will this change over time? I was watching the Chicago Blackhawks last night and it did not fit the screen and the reciever said it was in 1080 and as soon as the game was over and they went to the postgame show it stayed in 1080 but fit the screen.