This GoPro video was shot at down hill bike-racing event called World Pink-Bike challenge. Although this specific biker got third place, I think he was fast enough for my stomach to handle. Flying down hundreds of steps and going through unbelievably tight corners not to mention dodging people and animals, this sport is for real adrenaline seekers.
I am pretty sure he went through someone's kitchen at one point, see if you can find it.