I spent another hour and a half after dinner recabling satellite connections in the house; I left things in a bit of dissarray on Sunday night. Using the multiplexer, the signal from the old satellite receiver is now distributed to all the rooms in the house. This receiver has an RF remote so you can change the channel on any television in the house. The HD satellite receiver is running in the bonus room on the big screen.
I finally got a chance to sit and watch HD for a little bit. I stopped on KVIE's PBS HD (from the antenna, not from the satellite) and watched the end of a tour of the Kartchner Caverns and the beginning of a look at John Singer Sargent's work. ALL I CAN SAY IS WOW! My initial impression is that the picture is close to DVD quality.