aliens use blue light to steal brains

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

Adventurer/surgeon/rock musician Buckaroo Banzai and his band of men, the Hong Kong Cavaliers, take on evil alien invaders from the 8th dimension.

Aliens have brought the dead back to life to enslave the Earth.

Alien spirits from outer space land on earth and take over the bodies of the recently deceased--but their purpose isn't what it would appear to be.

Invading aliens are taking over the brains of folks in a small town. The head leech is a wad of black tinfoil with a couple of white thumbtacks for eyes. Others are spidery-like rubber things pulled along by strings.

Aliens attempt to brainwash civilization using various forms of media, unless someone can stop them.

Researchers Pierce Paris and Andrew Connor work at a super secret lab dealing with HIGHLY experimental equipment. How experimental? Well they have hypnobeams and alien specimens delivered and tested regularly. While waiting on their latest shipment, Professor Paris wants to test out the latest model of hypnobeam he's created. The subject? Professor Connor!

An evil alien brain, bent on world domination, takes over the body of an atomic scientist, while a "good" alien brain inhabits the body of the scientist's dog and waits for an opportunity to defeat the evil brain.

Aliens descend in crystal spaceships to make contact with people through guitar amp distortion and glowing animal skulls.