Jumping 173ft off of a beautiful waterfall. I did get knocked out when I hit the water and completely lost my memory for about five minutes after being pulled out of the water. If I had not been pulled out of the water by two people who I respect dearly I could have died.

Massive banger at "El Morro", Crystal Cove in Southern California. I walked away from this jump with a minor scrape on my back. How? I do not know. All I do know is that I probably wont be attempting this jump any time soon!

Oh right, anyone that's seen this guy do it. 

Just a little work on the calculation of the jump height and parachute timing.