I agree. HBO would be great. For Dark Tower too. The only thing is that HBO might want a lot of nudity in it. I haven't read Game of Thrones, but was there a lot of nudity there? Hard to imagine...
In the Game of Thrones books a lot of the characters spent a good deal of time in bordellos, so yeah, most of the nudity in the show came from the books. They could probably tone in down a little in the shows but they seemed to have embraced it wholeheartedly.