"Is it just something in your head? Will you believe it when you're dead?!.."
1967. A giant slime-infested asteroid is heading for earth! Astronauts disembark from a nearby space station to "blow that thing out of the sky". Do they have what it takes to "be faster"?
Directed by Kinji Fukasaku of "Battle Royale" fame and Tora, Tora, Tora!, Clock Tower 3 - the videogame)
Starring the ever so lovely Luciana Paluzzi (The Amazons, The Amazons! [ • The Amazons (1973) trailer ] ) Written by the eloquent Bill Finger of Batman, Superman and "Track of the Moon Beast"-fame.
The guy with the head is former cowboy star Robert Horton (Wagon Train, Lone Ranger and much more),. the one with the haircut is Richard Jaeckel, who also acted in Day of the Jaeckel (home-video, limited distribution), Starman The Dirty Dozen (also 1967, probably "the one for the studio" - Green Slime was obviously "for him":), Pat Garrett & Billy the Kid .
Without The Green Slime, or "After the Destruction of Space Station Gamma: Big Military Operation" (and all your base are belong to us), there would not have been pjeew-pjeew guns in Star Wars. I KNOW George Lucas saw this film... :)