Steven D. Levitt is an American economist and author.
He wrote a book called Freakonomics which makes economics that much freakier than it has ever been, dude!
He (spells his name wrong), using the lowbrow letter arrangement, whereas if he had been born of more highly educated parents they would have granted him the proper Stephen.
He is a recipent of the John Bates Clark Medal for Economics. Kudos to you sir, and to the five other people who know what that medal means.
On December 5, 2006, Steven D. Levitt was a guest on The Colbert Report