This movie is a philosophical drama that never achieved well-known cult status, but is good enough to warrant it. It’s a cerebral exploration of the nature of mental illness and personal sacrifice, being thought-provoking without falling into the open-endedness trap that so many of its peers relish. Its main flaw is esotericism, not ambiguity.
Closest comparison: It’s like M*A*S*H by way of One Flew Over the Cuckoo’s Nest.
Setting: Psychiatric
Plot: Drama
Tone: Philosophy