On the topic of alien, unpopular opinion of mine is that alien was much better than aliens.
I love action, but the suspense of the first one made for a much better and more entertaining film than the shoot ‘em up attitude of the sequel. Even going to the length of not letting you get a good look at the Xenomorph until it had already been killed is what makes it feel so real, despite being such a (relatively) old movie.
I’ve been informed not to waste my time with any of the “Alien” movies past that…(alien vs Predator was fun though).