Not the worst i've had, but as this was from yesterday i think it will make a nice addition to the thread.
I was in Deux Alpes this weekend, and decided to speed check a kicker in a not very sensible fashion. I overshot, and came down on my ski.
I cut a gash in my back from my hip to my spine - approx. 20cm long, and 7-8cm deep. Luckily i missed anything important. I got helicoptered out to Grenoble, had a little surgery there to sow up the muscle/cut, and left this afternoon.
My friends who picked me up didn't get in from partying until 9am this morning, so we were all feeling a little sorry for ourselves on the way back. Epic park at the moment though!