Terminator 2: Judgement Day: T-800 vs. T-1000

We told you Cameron was good at sequels! This 1991 follow-up managed to improve upon its own initial conceit, with Arnold's T-800 now being an antiquated model that's been reprogrammed and sent back from the future to protect the since-been-committed-to-a-mental-facility Sarah Connor and her now-teenage son, John Connor (who, as legend has it, will someday grown up to lead the resistance against the machines).The face-off this time is between Arnold and the T-1000, a new and improved "liquid metal" Terminator (played by the ever-creepy Robert Patrick) that can take the shape of anything it touches, and is seemingly impervious to any sort of gunshot. If only Skynet would send a cyborg back in time to tell Christian Bale not to do Terminator: Salvation.