What's the most overrated science fiction or fantasy movie?

There are so many classic science fiction and fantasy movies that have earned our love and respect, with their unforgettable characters and clever action. And then... there are the movies that somehow got a great rep that they didn't quite deserve. What's your pick for the most overrated SF movie?

Please share your choice below — and please be respectful about other people's choices. Also, please, please include a picture so we can have fun scrolling through the movie posters or stills.

Thanks to Rob, Meredith and Joey for suggesting the above image!