Japan musicians Androp built a backdrop of 250 Canon cameras and programmed all their flashes to fire off in a sort of digital stop-motion screen. Watch it, though I can't guarantee the video won't blind you and give you a seizure.
What is photography's greatest scourge? Cellphone cameras? MySpace self-portraiture? Neither even comes close to the insidious, creeping threat that is your camera's built-in flash. Here's when and how you should—and more importantly, shouldn't—use a flash.