Solaris

Tarkovsky's reaction to Kubrick's 2001 space odyssey, imagines a complex, psychologically intrusive contact with other intelligent nonhuman beings. His success lies in that he was able to drop, as much as one can drop, the antropomorphization of the unknown, and that he does so by using persons to depict the being's existence. Except for the fact that the main scientist is a psychologist, this is a wonderful piece.