Aliens
It isnt often that you see a sequel that can live up to the original. Even less often do you see a sequel like this, which is even BETTER than the original, which was a really high bar, as Alien was an awesome movie. The special effects are insane as well. You could tell me a lot of these crazy scenes were from a much more recent movie, over 39 years later, and I would definitely believe you. Loved the story and how it built upon what the original did while also feeling unique and not a copy/paste. Incredible stuff. A masterpiece in every sense of the word.