Walker, Deficit Ranger

David Walker is nominally the head of the Government Accountability Office. But really, he's a professional Gloomy Gus, having taken on the unenviable job of telling anybody who'll listen that we're headed toward a fiscal catastrophe of epic proportions. After Walker finished up his "demographic tsunami" routine for a group of reporters recently, USA Today reports, one reporter finally asked the question that must cross every person's mind at some point as they listen to the GAO chief's litany of impending woe: "Aren't you depressed in the morning?"