** note host outcue ** As more and more campaign ads fill the airwaves this election year, a couple of candidates are trying different approaches to cut through the clutter. A commercial created by Minneapolis adman Bill Hillsman for Green Party presidential candidate Ralph Nader parodies a popular MasterCard ad campaign, and a Fourth District Congressional candidate makes fun of herself in a series of humorous radio ads. In the latest in our series of Ad Watches, Minnesota Public Radio's Laura McCallum reports...