This is kind of an old story, but Blake Anderson from Workaholics broke his back when he jumped from his roof onto a beer pong table at his house. He's ok, made a full recovery, etc etc.
There's a video with the link, but it's hard to see because it's dark.
http://www.huffingtonpost.com/2011/12/23/blake-anderson-breaks-back-workaholics_n_1167802.html