I'll put my vote in for a 24/7 HD Phineas and Ferb channel... that's just about the only viewable program in their entire lineup, and given the choice, the only Disney channel I'd sub to.
Netflix has all the Phineas and Ferb's in HD. They don't have the most current episodes of season 3 as it takes about 15 days or longer before they can stream it but they do have over 70 episodes available with all of season 1 & 2. As I said before I am use to not having Disney in HD and get much of the Disney shows and movies in HD on Netflix. They don't have every show but they do carry most of them as they do most of the movies.