Clearly inspired by Hal 9000, Mother is the ship computer in Ridley Scott's 1979 sci-fi suspense masterpiece "Alien." Like HAL, Mother also has a secret agenda that she keeps from the crew, although she shares it with fellow artificial intelligence Ash -- the shifty android aboard interstellar mining vessel the Nostromo. When instructed to preserve the alien organism for biological weapon purposes, Mother doesn't do any electronic ethical hand-wringing. She just follows orders: "CREW EXPENDABLE." Mother never takes direct action against the crew of the Nostromo, but her unthinking, automated complicity underlines the theme of desperate humans versus cold, lethal killing machines.