I just watched The Truman Show a few days ago. I interpreted it as a story about a schizophrenic who keeps getting crazier, eventually experiencing a full out break and dying of exposure. The scenes with the production crew and audience are actually from the perspective of the schizophrenic's imagination as he tries to rationalize why so many apparently weird things keep happening. The scenes with Truman in them are Truman's retrospective exaggerations and distortions of events that were in reality relatively innocuous. All this allows you to see how real some schizophrenics think their delusions are.