...or at least the craziest. This video will make your heart stop.
His name is Alexander Polli, and he's a BASE jumper and wingsuit-extraordinaire who decided that he'd throw himself out of a helicopter in order to perfectly sail through a tiny hole in a giant rock wall in Spain.
If he gets it wrong, he hits a rock wall at 250km/h. If he gets it right, he's a hero.
Watch the video and you will believe a man can fly.