The Matrix (1999)
It's a smart movie if you know what to search for. Helps a lot for lucid dreaming.
A computer hacker learns from mysterious rebels about the true nature of his reality and his role in the war against its controllers.
Thomas A. Anderson is a man living two lives. By day he is an average computer programmer and by night a malevolent hacker known as Neo. Neo has always questioned his reality but the truth is far beyond his imagination. Neo finds himself targeted by the police when he is contacted by Morpheus, a legendary computer hacker branded a terrorist by the government. Morpheus awakens Neo to the real world, a ravaged wasteland where most of humanity have been captured by a race of machines which live off of their body heat and imprison their minds within an artificial reality known as the Matrix. As a rebel against the machines, Neo must return to the Matrix and confront the agents, super powerful computer programs devoted to snuffing out Neo and the entire human rebellion.