Star Odyssey (1979)
Confusing and bloated STAR WARS wannabe from Italy. Earth is about to be purchased by an intergalactic tyrant, but people with psychic powers and two suicidal robots are on the job. Film critic Brad Jones (TheCinemaSnob.com) once commented that this film was "so bad, I'm surprised the public domain claimed it."
Dilbert Thockmeyer commented
A fleet of invading UFOs piloted by android assassins menaces the Earth, and the planetary defense forces are powerless to repel them! Only the world's most brilliant scientist, aided by his hand-picked team of galactic warriors, has any chance of mounting a counter- offensive. Their best hope is to find a way to penetrate the enemy ships' armor, made from Endurium, the strongest substance in the universe. But their desperate search for Anti-Endurium is running out of time as the invaders begin herding millions of humans into slave transport ships. When help finally arrives in the unlikely form of a pair of love-struck robots, the final battle for Earth begins!
This would be worth doing just for the scene at the end where the professor reveals he can make some modifications in the robots so they can go all the way with each other. Not to mention the fact that the whole movie revolves around an alien force trying to conquer the earth to sell humans for slaves despite the fact that they can easily mass produce their own army of humanoid androids.