This guy, 87mcmahan87 on YouTube, is one ballsy son of a gun. Just watch this video. He recorded himself zooming around on his motorbike on a super skinny and snowy mountain ridge in Colorado. I almost died watching him balance, teeter and tease fate like a madman. If he slipped up, he would've came crashing down to his death.

Like all extreme videos, the video was recorded with a GoPro attached to his helmet.[YouTube via Laughing Squid]