For me it really depends on whether or not I agree with the filmmaker. Not exactly trashing but these two are pretty much on point:
Mendes on American Beauty: "It was a little overpraised at the time."
On the other hand Burton constantly mentioning his disappointment with Batman Returns or Fincher's himself distaste towards Alien³ truly baffle me.£Fincher on The Social Network: "I didn't really agree with the critics’ praise. It interested me that Social Network was about friendships that dissolved through this thing that promised friendships, but I didn't think we were ripping the lid off anything. The movie is true to a time and a kind of person, but I was never trying to turn a mirror on a generation.”
By his reckoning, Fight Club and, especially, Zodiac (neither of which were box office successes) are films, while The Social Network (which is a box office smash—close to $100 million in America alone) is simply a movie.
“It’s a little glib to be a film, Let’s hope we strove to get at something interesting, but Social Network is not earth-shattering. Zodiac was about murders that changed America. After the Zodiac killings in California, the Summer of Love was over. Suddenly, there was no more weed or pussy. People were hog-tied and died. No one died during the creation of Facebook. By my estimation, the person who made out the worst in the creation of Facebook still made more than 30 million dollars. And no one was killed.”"