Devil Girl from Mars (1954)
B&W British sci-fi flick from the 50's. A spaceship crash-lands in Scotland after colliding with a plane. The sole inhabitant of the spaceship emerges soon afterwards, looking like a cross between a vampire and a dominatrix. The martian visits the inhabitants of a nearby inn and announces that Mars is running out of men capable of procreation, and, as a female Martian, she has come from the planet Mars to look for suitable males to bring back to Mars for breeding.
Ridiculous but entertaining enough to watch to the end. The poster shows 3 spaceships but there's only 1 in the movie, and the robot-creature shown in the poster looks far more menacing and interesting than the one that actually appears in the film. A 3 star movie with a 5 star poster.