American Beauty. I thought it was predictable and creepy.
The 2000's Oscar was one of the last Oscars I watched live. I was shocked that The Sixth Sense didn't win. On the other hand, all my friends at the time told me I was delusional, and that American Beauty was awesome.
Edit to add: I often mix similar words or content when I talk (maybe it's a type of dyslexia?) At one time, I thought I had finally found a friend that agreed with me on this. He was completely flabbergasted that American Pie had won an Oscar. Only 15 minutes later when we discussed some plot points that I realized my mistake. It was hilarious. Unfortunately, he disagreed with me regarding American Beauty. Oh well.