The Number 23 (2007)

Walter Sparrow becomes obsessed with a novel that he believes was written about him. As his obsession increases, more and more similarities seem to arise.

http://www.imdb.com/title/tt0481369/

The Jacket (2005)

A Gulf war veteran is wrongly sent to a mental institution for insane criminals, where he becomes the object of a Doctor's experiments, and his life is completely affected by them.

http://www.imdb.com/title/tt0366627/