Them!(1954)

One night, a female demon attacks Rick, a contentedly married man. Under the spell of the demon, he takes a beautiful young woman, Ariel, off to an isolated house for a weekend fling. There, bizarre and frightening things happen, and accidentally Rick kills Ariel. But she won't stay dead. He soon realizes that she is the demon that first attacked him. He defends himself by killing her again. And again. But no matter how many times he kills her, she keeps coming back

A boy deals with the loss of his mother by creating a relationship with a dangerous monster.

A fungus dubbed "Blood Rust" from outer space threatens to destroy the Earth.

A countess from Transylvania seeks a psychiatrist’s help to cure her vampiric cravings.

After their plane crashes in the Pacific Ocean after a storm a group of people scramble to a tropical island. At first the place seems home to palm trees and exotic wildlife but on the discovery of a disused military base they find out the island poses a severe threat to them

A nuclear explosion in the far north unleashes Gamera, the legendary flying turtle, from his sleep under the ice. In his search for energy, Gamera wreaks havoc over the entire world, and it's up to the scientists, assisted by a young boy with a strange sympathic link to the monster, to put a stop to Gamera's rampage.

Four people return to the haunted woods where their friend was eaten by an ancient monster. Because they want to fight it. Because they're stupid.

A refugee Soviet scientist arrives at a desert airport carrying secret documents, but is attacked by a pair of KGB assassins and escapes into the desert, where he comes in range of an American nuclear test and is transformed into a mindless killing beast.

Special Agent Strahm is dead, and Detective Hoffman has emerged as the unchallenged successor to Jigsaw's legacy. However, when the FBI draws closer to Hoffman, he is forced to set a game into motion, and Jigsaw's grand scheme is finally understood.

Gamera escapes from his rocket enclosure and makes his way back to Earth as a giant opal from New Guinea is brought back to Japan. The opal is discovered to have been an egg that births a new monster called Barugon. The creature attacks the city of Osaka by emitting a destructive rainbow ray from his back, along with a freezing spray capable of incapacitating Gamera.

It’s 1985 and adventurer, Jonathan Danger, has just crash landed onto an Island 20 miles off the coast of Africa. He’s looking for a temple that may or may not be his ticket to go back in time. Too bad the Soviets got there first. Too bad they want to go back in time to change the events of the Space Race and the Cold War and World War II. Too bad he has a punctured a lung. Too bad he’s been kidnapped by Jungle Jim and his sister Jade Calloway. Too bad he never gives up.

'Hell' is the name of the hero of the story. He's a prisoner of the women who now run the USA after a nuclear/biological war. Results of the war are that mutants have evolved, and the human race is in danger of extinction due to infertility. Hell is given the task of helping in the rescue of a group of fertile women from the harem of the mutant leader (resembling a frog). Hell cannot escape since he has a bomb attached to his private parts which will detonate if he strays more than a few hundred yards from his guard.