#20: Unbreakable

M. Night Shyamalan movies are known for their plot twists and Unbreakable is one of the best. It features a security guard (Bruce Willis), having been the sole survivor of a high-fatality train crash, finds himself at the centre of a mysterious theory that explains his consistent physical good fortune. When news of his survival is made public, a man (Samuel L. Jackson) whose own body is excessively weak tracks him down in an attempt to explain his unique unbreakable nature.