I'm sure I'll get hate for this one, but The Matrix
was actually one where I went into it blind (not in a theater, but as a rental), and I absolutely hated it. I was liking it at first, but then I found it to be cheesier as time went on, and eventually I got so bored that I left the room and didn't see the last 20 minutes of it.
Oh, and I forgot a good story that brings up uncomfortable memories. When I was a teenager my dad and I went to the movies and blindly chose American Pie, knowing nothing about it. Most awkward experience EVER.
I really can't think of any movies I've gone in blind to that I ended up liking!