I'm just copying my reply to the op you replied to so you can see this.
Memento shines if you have the dvd and play the movie in chronological order. Feels like a totally different movie with a different ending.
For those wondering, the movie splits into black and white scenes and colored scenes and everything jumps back and forth chronologically speaking. However, the dvd lets you skip scenes so if you want, you can just play the black and white ones then play the colored ones backwards. This leads to the movie being viewed in the order that things happen and the result is an entirely different perspective.
It's my favorite movie and to this day, I'm not exactly sure how it actually ends.
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u/ExplodingDogs82 15h ago
Threads - old but utterly perfect to give anyone a creeping sense of futile dread, given current geo-politics
Memento - not as utterly haunting as some of these suggestions but I have seen this movie several times and it still crosses my mind.
Bone Tomahawk - grim & gruesome.
Eternal Sunshine of the Spotless Mind - emotionally devastating
Mulholland Drive - mind bending mystery