A broken Canon 580 EX II Flash that I had just dropped. It was actually attached to the camera hot shoe when I dropped both the camera and the flash. That is the 2nd time this has happened with me. Both the camera and the flash are really good at surviving drops. Trust me, I am really good at letting my equipment fall all the time. That problem seems to be when the flash is on the camera and the flash/camera connection is the weakest point. The flash seems to be still working though and I will try to get it fixed.