Horror of the Blood Monsters (1970)

In the near future with a intergalactic vampire plague threatening earth, an expedition is sent to a distant galaxy in hopes of discovering the plague's source. Landing on a mysterious planet they discover that Spectrum radiation has turned the atmosphere into a one-color tint. Exploring further, the group discovers living dinosaurs, a race of vampire cavemen, and other strange creatures.
Ya gotta love Al Adamson. Only he would (1) take footage from a 20-year-old movie about gorillas in diving helmets ("Robot Monster"); (2) combine it with clips from a 30-year-old movie about elephants with hair mats glued to their sides ("One Million B.C."); (3) throw in parts from a God-knows-how-old Filipino movie about midget cannibals, half man/half lobster monsters and beer-bellied Chinese cavemen with snakes growing out of their shoulders (all of the aforementioned footage being in black and white); (4) spend $2.15 shooting new "connecting" footage (in color, no less) with an apparently--to be charitable--confused John Carradine and a bunch of actors who have trouble remembering their lines (among them a vapid blonde who is so incompetent that all her dialogue is dubbed in by someone else, and who doesn't even have the decency to make up for it by getting naked); (5) put it out under at least 10 different titles; and (6) try to pass each one off as a new movie. Go, Al!

This is Al's masterwork, the film by which he will always be remembered. Orson Welles had "Citizen Kane," Michael Curtiz had "Casablanca," Francis Coppola had "The Godfather," Al Adamson has "Vampire Men of the Lost Planet." You're in heady company, Al. You deserve it.