The Terminator
Leave it to evil supercomputers to come up with the most efficient solution to that age-old problem, the human race. Here, Skynet, a supercomputer from the future, sends back a cyborg that looks remarkably like the Governor of California to wipe out the mother of the next Che Guevara before she can give birth.
How that's easier than killing him when you've got all of humanity surrounded by thousands of robots in your own time is beyond me, but I'm no supercomputer.

Tags: Diabolical Schemes Evil Plans Humor