15. Frankenstein vs. Baragon
Also sometimes known as Frankenstein Conquers the World, this nutty Japanese flick is mainly set after the Allied bombing of Hiroshima. It's basically builds to a crazy smash-up between the stitched-together horror legend himself (who somehow swells to giant-sized by guzzling one too many protein shakes) and a kind of people-eating lunatic dinosaur called Baragon. It was made by Japanese horror production legends Toho studios and is about as bats as a double-monster showdown can get.