Ridley Scott's atmospheric gothic sci-fi horror begat James Cameron's slam-bang action-thriller with slime. Cameron makes his collection of macho marines endearing and Sigourney is spell-binding. Highly recommended.
Lone survivor of the first film awakens from hypersleep 57 years later, to find that the planet where the aliens were first found is now a human colony--a colony with which contact has been lost. Accompanying the Marines sent to investigate, Ripley has to face the xenomorph once again, only this time there are a LOT of them. . .
Probably the perfect action movie, because it has action and heart behind the gunplay. And it's a pleasure to watch a film where the supporting characters all get their moments in the spotlight and aren't just cardboard cutouts there as cannon fodder.
Note: Character names are from canonical supplemental sources.