I was looking forward to this movie with so much excitement after part one, but it disappointed me so much that I don't even want to know if there will ever be a sequel or not.
It not only departed far away from the story of the book (that I could forgive as it happens all the time) but it did it in contrast of part one, and for that I feel cheated.
Part one was boring for many viewers if they haven't read the book, but I loved it exactly because it followed the book and had so many little parts that you only understand if you already have some knowledge about this universe.
But in part two they not only twisted the story compared to the book, but they twisted characters compared to part one, and they utterly failed the promise of the first movie.
I don't understand why they turned part one's Stilgar, a respectful leader of the Fremen to an obsessed religious fanatic in part two, and I could go on...