100% badass. Houdini was one incredibly cool guy. Most of his tricks were not the simple illusions most modern magicians employ, but feats of amazing strength, endurance, and dedication. He is best remembered for stunts like the water tank escape, but allow me to recall what I think was his greatest escape:

Houdini was bound by the hands and feet with manacles, and imprisoned with a straightjacket. He was put in a barrel to be thrown into a river. However, the river had frozen over. So he had a hole cut in the ice, and he was tossed through the hole into the icy water. He escaped the barrel and his bindings - only to find he had drifted further down the river, and was far from the hole he had entered through. So a new hole had to be cut in the ice so he could escape, all the while with him trapped in freezing water under a sheet of ice.