The Academy Award for Best Picture is one of the Academy Awards (Oscars) presented annually by the Academy of Motion Picture Arts and Sciences (AMPAS) since the awards debuted in 1929. This award goes to the producers of the film and is the only category in which every member of the Academy is eligible to submit a nomination and vote on the final ballot. (Wikipedia)
I know since it won a bunch of Oscars people like to call it a thriller but one character eats people, and another skins them alive and wears their skin as an outfit. I am going to go with a horror film for this one.
The film is brutal in both its action and the psychology of the men involved, and the story works as both a real tale and epic allegory — a fantastic movie.