Let's face it - the world is not a safe place. But following the lead of Batman, a geek's best defense is often a gadget. And in this case, it's a gadget with one heck of a bite. The ZapCam - YouTube Tazer packs a non-lethal 60,000V bite, to be exact. It shoots its barbed tipped darts out up to 15 feet on insulated wires (so only your attacker gets the juice). And for added safety, the integrated camera (activated the moment you disengage the safety mechanism) will record a full color video of the entire incident and upload it (via Bluetooth 2.0 with your cellphone) straight to YouTube.

Robert Dziekanski was struck by a taser and dies shortly afterwards at the Vancouver Airport.