A few days ago, on May 28th, Jed Mildon attempted and successfully landed the first BMX Triple Backflip in history. The trick was done in Taupo, New Zealand on a 20 meter (66 foot) roll-in ramp. The height of the ramp in the first part of the video is enough to make me squirm a bit.
There is also more video about Jed’s preparation for the jump to be seen.