ewhac writes "The San Francisco Chronicle is reporting that the MythBusters accidentally sent a cannon ball hurtling through Dublin this afternoon, punching through a home, bouncing across a six-lane road, and ultimately coming to a rest inside a now-demolished Toyota minivan. Amazingly, there were no injuries. The ball was fired from a home-made cannon at the Alameda County Sheriff's Department bomb range, and was intended to strike a water target. Instead the ball missed the water, punched through a cinder-block wall, and skipped off the hill behind. Prior to today, the MythBusters had been shooting episodes at the bomb range for over seven years without major incident. It is not clear whether Savage/Hyneman or Belleci/Imahara/Byron were conducting the experiment."