This is really weird, but: Harry Potter and the Chamber of Secrets. Thing is, my girlfriend is five years younger than I am, so while I was fifteen around the time the Lord of the Rings films came out, my girlfriend was ten and inevitably drawn to the more juvenile plots of the Harry Potter books and films. She had all the dvds from back when they came out, and I thought, meh, why don't I watch them just to get it over with (and for Emma Watson, rrraorr).Huge fucking mistake. It turns out I fucking hate child actors. And there's about five more films after this? Fuck.