I don't like where this is going. No actor besides Clint Eastwood could possibly play Roland, and quite frankly, he's now officially too old for the role. Ah, well, I'm going to have to at least try it out.
And on the subject of the ending:
[spoiler: You really don't want to click here if you haven't read every page of every book.]
The ending was, in my opinion, perfect. Well, okay, not exactly. The Crimson King being destroyed with a magical eraser was absolute anticlimactic bullshit, and so was Mordred, who'd just been born at the beginning of that book, taking out THE SINGLE MOST LOVED-TO-BE-HATED AND ICONIC VILLAIN IN THE KING MULTIVERSE in a scene that was over so quickly the reader barely has time to register it (making Flagg look like a pussy in the process, might I add), and then getting himself killed after 900-odd pages of doing nothing but wangsting about how alone he is.
But Roland's quest being an endless cycle is exactly what the series should have ended on. Roland is obsessed. He wouldn't have been able to do anything but wither and die after he saw the Tower. Besides which fact- did you ever notice how Roland as a character was, well, despicable? I mean, come on, some of the horrific crap he's done to reach the Tower- you've got to admit that he deserves it just a little bit.[/spoiler]
And don't get too excited about the eighth book, people: in a poll on his website, King asked readers if they'd rather see another book in the Midworld cycle, or a sequel to the Shining, both of which he was planning on working on anyways, and the Shining sequel won out, so he probably won't be on book eight for a while.