This and The Joker are the two movies that come to mind when this type of question comes up. Inception is not particularly bad, just so.... correct. I was expecting something really mindbinding, that would make me rethink about it long after the movie was over. It was just a pretty scenery with mid acting. No amount of practical effect can carry a movie on his own. The Joker on the other hand was just a waste of my time and left me infuriated.