I added Cinemax for a penny and HBO/Starz free for 3 months. Took about 5 minutes. All I had to do was complain about stuff (no HD locals, external hard drive activation, blah blah blah) and they offered both packages to me. Good luck! :up
EDIT: I should mention that I called to do this, from the dishnetwork.com website I am actually blocked from changing programming. But I've never had much success doing ANYTHING on Dish's website, haha.