That video has been posted before and it nearly descended into a riot. People arguing that it was speeded up or faked, mass argument about how it'd be so much quicker on a full sus and the usual bollocks about how everyone on here with a full sus and a modicum of skill could outride him. Watch the video carefully, his forks are set pretty solid too!
The guy is a Japanese freerider/DHer – I guess he's the same sort of level over there as Danny MacAskill is over here. Not known by the average person on the street, doesn't really compete but most bikers have heard of him.
Top video, the guy is SO smooth. 🙂