The local CBS affiliate here in Joplin,Mo. started broadcasting in HD about 2 months ago. I have had an HD TV for about a year and a half and HD sattelite channels.
Well, I just figured out my sattelite reciever has an over air HD tuner (my TV doesn't) and I could have been watching the games in HD all year.
I almost blew money on a tuner.
The most interesting part, I found, is that when I went to Radio Shack to get an HD antenna, I was told any antenna will work, there is no difference. I already had a roof mounted antenna.
Sure enough it works and now I am set with HD at no extra cost, albiet 2 months later than I could have.
Anyway, I am pumped.