Seriously though, (Well, OK I was serious in my title.) I did not take my own advice and paid $20 for The Dark Tower on iTunes and my wife and I watched it to night. Arcel owes me my $20 back.
First off they took stuff from pretty much all of the books. Including THE PLOT of the LAST ONE. (WTH?) It opens up with the Breakers shooting blasts at the the tower, i.e., the last book, which is like The Fellowship of The Ring opening with the reforging of Narsil. Totally disjointed and not thought through. It all leads me to think that Mr Arcel never bothered to even read the source material.
As a stand alone movie you could say it was a film "inspired by" the book series. But even then it is very disappointing. One serious pet peeve is the guns. They are double action in the movie. Not the cowboy single six's of the books. And there are a few times they are pulled them out and you hear the cocking sound... but they are not cocked. Which is just stupid.