The story is based around "spermulites", the alien inhabitants of a dying planet. The only way they can save their planet is by sucking the men of planet earth dry of sperm, kind of like horny vampires.
Director:Charles Matton
Dracula
Predator
Mars Attacks!
The Brides of Sodom
Predator 2
War of the Worlds
Terminator 3: Rise of the Machines
The Purple Monster Strikes
The Black Water Vampire
A Girl Walks Home Alone at Night
Nosferatu
Next Door
From Dusk Till Dawn
Starship Troopers
Landscape with Invisible Hand
Independence Day
Interview with the Vampire
House of White Spiders
Sleeper