An amorphous cellular life-form descends from the atmosphere to consume carbon in the form of diamonds.
A science fiction writer is gifted with the ability to materialize his thoughts and inadvertently brings a group of aliens to Earth.
The disappearance of a decorated FBI agent's wife leads him to a secret government unit assembled to hunt a group of ruthless terrorists--shadowy figures that may or may not be from this world.
An Arizona logger mysteriously disappears for five days in an alleged encounter with a flying saucer in 1975. His co-workers endure ridicule and contempt as they are wrongly accused of murder.
A government employee discovers that the cause of the tensions between the two political parties is a race of extraterrestrial insects eating the brains of the politicians.
Spoof of recent science fiction films including all of the obvious choices and "Dr. Strangelove" finds two garbage men defeating an alien invasion.