Stalker
This is perfect in every way. Tarkovsky achieves what no other filmmaker in my experience has ever achieved, and it's that his movies are able to travel deep into my soul and put me in a trance-like state throughout the full runtime of all of his movies, like an experience I never experienced before and didn't even think was possible before discovering Tarkovsky. This is also has my favourite score within Tarkovsky’s filmography.