Mulholland Drive. Because it is the only one that makes you doubt your own memories after the screen goes black.

In Inception , dreams are not passive hallucinations. They are constructed, malleable heist locations where time dilates and the dead walk. The film follows Dom Cobb (Leonardo DiCaprio), a thief who steals secrets from within the subconscious. His ultimate job, however, is the opposite: planting an idea. But Cobb carries his own anchor—the ghost of his wife, Mal, who haunts his dreamscapes like a virus.