I think that HBO should take this book and run with it. It could be like another Game of Thrones.I just watched this at home last night.
1) If I didn't already know the finer details of the story, I think I would have been lost. There was zero build up to who is who, and what is what. Did everyone catch Charlie the choo choo in the park? I did think that was a nice touch.
2) Walter was right when he was talking to Jake about the story. The Gunslinger was just a peripheral character. The story was about Jake and Walter.
3) I can honestly say that this is one of the worst films (along with Cell) that has SK's name attached to it.