Alien in human brain pops up and out of head

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.

When some very creepy things start happening around school, the kids at Herrington High make the chilling discovery that confirms their worst suspicions: their teachers really are from another planet!

Spanish short documentary film by Antonio de Padua Tramullas.

A breed of humans with dangerously powerful telepathic abilities -- the scanners -- are being recruited by a corrupt police commander, John Forrester, in his crusade to take over the city.

After a man with extraordinary, and frighteningly destructive, telepathic abilities is nabbed by agents from a mysterious rogue corporation, he discovers he is far from the only possessor of such strange powers. Some of the other “scanners” have their minds set on world domination, while others are trying to stop them.

The Earth is invaded by alien parasites—AKA 'slugs'—that ride on people's backs and control their minds.

Four boyhood pals perform a heroic act and are changed by the powers they gain in return. Years later, on a hunting trip in the Maine woods, they're overtaken by a vicious blizzard that harbors an ominous presence. Challenged to stop an alien force, the friends must first prevent the slaughter of innocent civilians by a military vigilante ... and then overcome a threat to the bond that unites the four of them.

The film centers on two estranged sisters who, along with their friends, become entrenched in a 48 hour whirlwind of violence after a traumatic experience at an underground music festival.

An unseen alien manipulates the mind of a drug addict, forcing him to commit acts which he cannot recall later.