You've probably heard of Leonardo da Vinci. He is horribly famous for painting the most famous picture in the world, designing the first-ever flying machine and being the all-round fabulous renaissance man. But did you know that Leonardo designed heaps of wicked weapons including a murderous machine gun, thought pink was the coolest colour for clothes and liked to cut up people's dead bodies to look for their souls? Yes - even though he's dead, Leo's still full of surprises.