While I get some HD via OTA, i.e., NBC and FOX, the other networks, ABC, CBS and The CW, I get via satellite, but not D* or Dish (non of the pizza-pan suppliers). That is why I couldn't tick the satellite box and I'm sure it was meant for pizza-pan subscribers.
I do not get any "cable-channel" type HD services (Discovery, HBO, etc).
There was a comment that OTA has the best picture. There are many who would argue that, me being one of them. The bitrate starved ATSC just cannot handle rapid video frame changes. The MPEG-2 encoders just do not have enough to create a clean signal. Jut ask anyone who watches sports on their HD displays. I hear nothing but complaints.
Clean MPEG-2 HD requires a bitrate the is at least twice the maximum that can be put out over ATSC channels. When you see HD with a bitrate of 35-40 Mbps, you hate going back to ATSC bitrates. Even better video is 1080p, as provided by the hi-def DVD format war. Unfortunately I've not seen hi-def DVD video, but everything I read is all positive. OTA/Cable/Pizza-Pan is not going to be able to provide the video quality of hi-def DVD 1080p.