Not sure if "the thing" counts (the first movie, second one is dog water). My favorite horror/alien movie. Admittedly I don't watch many movies in general.
On the note of humanity vs nonhumans type movies I noticed a misanthropic trend of depicting humans as evil or wicked and portraying their opposition as virtues or innocent. Take for example avatar, where the whole movie boils down to "people are le greedy, blue gayleins are le good because nature o algo". It gets annoying, I love humanity and I want to root for it. Ted Kaczynski was right or however the explosives are improvised but when I see giant industrial plants and war machines that's what I'm rooting for: human progress (inb4 tranny reacted), ingenuity and ability. I don't want to root for some blue freaks just because they're some spearchucker nigger stand in who ride dragons or whatever. And with starship troopers you have the whole "look people killing bugs le bad because bugs are brown children actually and humans are le fascist". Almost all the media depicting robots too, "robots are le people even doe they're just tincan calculators and humans are le evil for not treating the toasters with respect". Even miziyaki or whatever his name is with ghibli studios that I watched as a kid, aside from porcorosso (best movie) everything is some flavor of "people le bad". It's tiering, it's like we can't even have simple entertainment where humanity is allowed to prevail and fight for itself, everything needs to be some sort of commentary on humans being the mud off of a shoe. Can't we get something about humans fighting an unambiguously inferrior/immoral threat? Well we probably have and it's just a failure of finding it on my part