After I bought my Samsung 50" DLP, I hit up Directv to switch me over to HD. They said "Gimpy, that will be $9.99 a month more" I'm like hell yeah, thats beer money.
They gave me a new dish, installed it, and an HD receiver for FREE! 10 bucks a month, and they are now up to 90 HD channels and counting.
Go for it!