These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: American Beauty
Award Snub: Despite the praise it received, Thomas Newman's score failed to win a Oscar. Some also were disappointed that Chris Cooper didn't receive a Best Supporting Actor nomination for his role.
At the very least there's a personal Inferred Holocaust coming for the rest of the cast, since almost all of them have a reason to commit the murder and all of their dirty laundry is going to come out in the ensuing criminal investigation.
Harsher in Hindsight: Angela nearly lets a friend's middle aged father take her virginity, and tearfully admits how stupid she feels for it. Later, Mena Suvari, her actor, confessed to the public that she regret whom her first time was with (albeit this was a "loser" by her words, not an aged man).
Narm: While the message — that beauty is all around us if we know where to look — is fine, many viewers found the way that several of the characters regarded that little plastic bag blowing in the wind as being a little bit overwrought and pretentious. It's a bag caught in an updraft; it might make a very nice image, but it's hardly the cure for cancer or anything as groundbreaking or awe-inspiring as the characters seem to think it is.
It's worse when you know the effect is completely artificial; there were two guys with leaf blowers standing just out of the frame to keep it moving for that long.
Kevin Spacey's frozen, slack-jawed expression that the camera zooms in on when he sees Angela for the first time.
Though he was probably meant to look dumb there.
Seinfeld Is Unfunny: Especially since a film that looked at the darker nature of suburbia was considered a marvel then, but the themes tackled in this film have been more common by now.
Values Dissonance: The criticism from most of the negative reviewers on Rotten Tomatoes. Mostly about appearing to glamorize the lifestyle of the man after he starts neglecting his responsibilities to his family in favor of buying drugs from and trying to seduce high-school students as a middle-aged man, as well as further trying to avoid responsibility by getting an entry-level job, despite his family's middle-class lifestyle and daughter approaching college age (despite the fact that he had blackmailed his way into a nice severance package beforehand and therefore didn't really need a job). Responsibility doesn't seem to go hand in hand with happiness for the protagonist, although it's debatable how "happy" he was at any point in the film.
The Woobie: Jane, Ricky, and pretty much everyone at the end.
Lester at the start even if he hides it beneath layers of sarcasm. Anyone who has ever felt that their best days are behind them and felt that horrible sense of being detached from life will definitely relate.