severe concussion from my ski popping off doing a 360 off a 25 foot cliff, tweaked my knee from landing on my tips, broken thumb, fractured heel(that was a cool xray...the bone actually went THROUGH this little pad of muscle on the botton of your heel..) that happened from misjudging speed on a kicker and overshooting the landing by about 20 feet.  landing on flat surfaces from 60 feet up is a bad idea.  tahts it though, expect more this year when im gonna try my first misty..heh