I've seen a few terrible ones. I remember 'The Happening' and thinking, I don't care what happens to these people, I just want this move over.
With Jeremy Irons, Meryl Streep, Glenn Close, Winona Ryder you would think, wow! that's going to be a great movie, but nope 'The House of the Spirits' was terrible. I spent more type worrying about a little girl whos parents let her be in a too inappropriate scene.
I also thought 'The Fifth Element' was a mixed terrible movie. I had some great effects and elements, but also felt like a 5th graders fantasy where you whisper in a girls ear, here legs spread, and a light that saves the universe comes out of it.