I've never liked American Beauty, it's always annoyed me. The film sets up the premise of the middle-aged man going through a midlife crisis and rejecting everything around him, and what happens when you do that, and the impact on your family, health, etc, then it cops out just before it gets into really dangerous territory and has the main character randomly die. And they tell you he's going to die in the first scene of the film, so it's not even a surprise! (or a spoiler)
It also has the single most annoying scene in film history - the bag floating about in an updraft and that kid eulogising over it. As Peter Kay would say: "What's that??!?! That's just litter and wind!!"