Everybody is going nuts for doughnuts and across the country doughnut shops are coming up with innovative new ways to re-invent this crowd favorite. In Portland, Oregon, there's a place that specializes in grown up versions that feature bold glazes and boozy fillings. In New York, old-school mini doughnuts made fresh to order are all the rage, the 15 different kinds of flavored sugars let you customize your own for a bite that has your name all over it. And in San Francisco, a charming little doughnut shop has developed a loyal following thanks to their light, supple doughnut and their seasonal silky cream fillings.