Today is 21st April 2011, and if you are believer of the Terminator timeline then as per the Sarah Connor chronicles, then this is the date when Skynet the computer network starts a nuclear war against humanity. Skynet became self-aware on April 19, 2011 and it will launch nuclear missiles on all the major cities and military installations of the world at 8:11 PM today.
This post caused me to waste over an hour wiking ethics of robotics, artificial intelligence, robot safety, technological singularity... etc etc.... not good.... LOL