What Movie Did You Dislike, Until Someone Explained It To You?

Sometimes a movie just doesn't work for you — until someone else explains all the cool stuff they got out of it, and all the extra layers of meaning they saw. Sometimes a really good explanation can retroactively make everything that much better. But which movie did you not like until someone gave you their take on it?

Please include a picture, poster or clip for your chosen movie. And please mention the title, and what explanation won you over. Thanks!

Top image: Donnie Darko, a film that needs quite a bit of explaining.