Solaris

After the final events on the station at Solaris occur, Kelvin (Donatas Banionis) is then shown puttering around in his house back on Earth. However, as the camera pulls back from his house and land in the final scene, it is revealed that he is actually living in a manifestation on the surface of Solaris - and that Kelvin is unaware that he is not back on Earth.
Thanks, Z-Man!

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