Well, I have 2 stories that I think will top this list:
1. As of recently, due to my line of work, I saw someone who had been shot in the face twice with a nailgun. Yes, they both went into each eye somehow.
2. There is this machine called a 'pipe threader'. What it essentially does is cut the notches into the piping so they can be screwed together. It does burst cuts, it does not constantly keep spinning/cutting. Anyways, there was this guy with long hair that evidently did not tie it up. His hair got caught in the thing.
Ok, I know what your thinking: Probably a scalping...which is something I've actually also seen. Phuck, no it wasn't a scapling. His hair was still connected and when it spun it broke his neck so he died. Then whenever it would spin in burst intervals it would fling around his body since his hair was still there. This went on for 45 minutes before someone came and found him.