You might remember Kurt Gödel. He was last seen on io9 proving the existence of God, at least in theory. Legend has it he also found an odd clause in the Constitution which proves that the United States could be legally made a dictatorship. And he told it to immigration officers.
Kurt Gödel was best known as a mathematician and secondarily known as an extreme eccentric. After his death, he became known for something else: creating an ontological proof of the existence of God.