Long before the Terminator was a good guy helping John and Sarah Connor eliminate cyborg threats sent back from the future, he was the original cyborg threat, sent back in time to kill Sarah Connor before she could give birth to the man who will save the world when Skynet becomes self-aware and the man vs. machine war begins. Arnold Schwarzenegger's robotic line delivery and movements are chilling, especially when you load him up with all those muscles and gun power.