Maybe you haven't seen them yet.
1. Solaris (1972)
Genre: Science Fiction, Drama
Director: Andrei Tarkvosky
Writers: Stanislaw Lem (novel), Fridrikh Gorenshtein (screenplay), Andrei Tarkovsky (screenplay)
Stars: Donatas Banionis, Natalya Bondarchuk, Jüri Järvet, Vladislav Dvorzhetskiy, Nikolay Grinko, Anatoliy Solonitsyn
Country: Soviet Union
IMDB, Rotten Tomatoes
Psychologist Kris Kelvin is sent to a space station orbiting the ocean planet Solaris, to determine whether research of the planet should go on or be terminated. He finds the station run down, one astronaut dead, and the remaining two cold and secretive about the nature of their surroundings. The planet has been researched for a long time, but the details Kris has are hazy and few. It appears Solaris hosts some intelligence, and soon it makes contact with Kris, like it did with the others before him.