If you want to see the film that launched filmmaker James Cameron's career (and solidified Arnold Schwarzenegger as one of the greats), then you'll want to watch this sci-fi classic, which eventually led to an insanely popular franchise with four sequels. Schwarzenegger plays a cyborg assassin sent from 2029 back to 1984 to kill Sarah Conner before she can give birth to a future resistance leader, and it's a must-see if you want to know where everyone's fear of an AI takeover (and the catchphrase "I'll be back") originated.
Watch now.