American Beauty
The plot: Lester has a mid-life crisis, jacks in his job and begins to turn his life around, destroying the lives of those around him in the process.The good: Fantastic story, Kevin Spacey, great camera shots, Sam Mendes did a great job directing it.
The bad: I would say long and emo so not for action fans. But I don't want to put you off, because it isn't. I can't say bad about this film. Everyone loves it.
Conclusion: If for some reason you haven't seen this movie yet, finish this sentence, go to Amazon and buy the DVD!