Shine
A brilliant film staring Geoffrey Rush (he won the Best Actor Oscar for his perfermance).
Tony Manero
A film set during the Pinochet dictatorship of Chile. The main character, Raúl, has dreams of winning the national televisions Tony Manero impersonator contest. Raúl is a psychotic serial killer who's obsession with John Travolta's character (Tony Manero) in Saturday Night Fever leads to murder and betrayel.
Taxidermia
From imdb - "Lajoska embalms his father, stuffing straw into his stomach through the holes the cats gnawed. We next see him strapped standing into an elaborate contraption in the basement of his workshop. Pumps slowly sigh, liquid flows through clear tubes, syringes dive into flesh, and trays of scalpels and other vicious medical instruments move past on articulated arms.
With the aid of mirrors, clamps and levers, Lajoska begins the exacting and painstaking work of eviscerating himself". You have to have a pretty serious mental illness to do that kind of thing.