An alien that feeds on old people

Ripley, the sole survivor of the Nostromo's deadly encounter with the monstrous Alien, returns to Earth after drifting through space in hypersleep for 57 years. Although her story is initially met with skepticism, she agrees to accompany a team of Colonial Marines back to LV-426.

While scavenging the deep ends of a derelict space station, a group of young space colonizers come face to face with the most terrifying life form in the universe.

A small-town doctor learns that the population of his community is being replaced by emotionless alien duplicates.

The residents of San Francisco are becoming drone-like shadows of their former selves, and as the phenomenon spreads, two Department of Health workers uncover the horrifying truth.

Two friends on a road trip pass through a town where aliens are landing and feeding upon the some of the civilians.

A bored monkey finds a hungry baby alien - but what do aliens eat?

The alien invader has came from a can and goes to terminate one small village.

Alien visited Earth recently. He saw how people treat animals and each other. He got sick because of the air pollution and chemicals in food. He witnesses war, terrorism and death. Now because of ALL of that he can be compensated and law firm Alien and Alien is about to help him.

An alien life form lands on earth and begins to feed off electricity, making it grow to enormous size. The authorities must stop it as it slithers cross-country towards a nuclear power plant.