SM64org:Backwards Long Jump
BLJ
BLJs can only be done while standing next to certain slopes, stairways, and obstacles. Do a long jump facing away from the obstacle but moving backwards against it. Mario will "crash" with it, leaving him on the ground and enabling him to BLJ again.. When Mario get's the speed they players wants him to have, he simply stop lung jumping that will make him run backwards with the speed you got from the BLJ.
The biggest speed you can reach with a BLJ is -1.#INF. You can see a complication of Stair/Slope BLJ's here. http://www.youtube.com/watch?v=hV8sLNh-uxo