There are so many terrible ones, I'll go with 2 that were terrible as well as very disappointing, due to high expectations. Star Wars - Episode I (The Phantom Menace ) & Star Wars - Episode II ( The Attack of The Clones). I loved the first 3, but these 2 were just mind-numbingly boring. If I hadn't been with my son I would have bolted within 20 minutes both times. It's got me afraid to see Star Wars - Episode III (Revenge of The Sith), which everyone says is a welcome return to the plot & character-driven first 3.