I think this might go better in the TV and HDTV Programming forum. Doesn't really involve a piece of equipment, which is what A/V Sources is really about. You may want to have a moderator move it. I'm sure it will get many more replies there.
Personally I"m less excited about this development, because Comcast in my area is incredibly slow to add HD channels and it will probably months, if not years, before Comedy Central HD becomes available to me. (And DirecTV isn't an option because my condo faces north. :frowning