Before there was Michele Bachmann, Sarah Palin, Scott Walker or any of the other current radical conservatives seeking the national spotlight and perhaps the Republican nomination for president, there was Newt Gingrich. The recent boomlet around a potential presidential bid by the aging right wing revolutionary feels like a strange hybrid of the unique quirkiness that has always been part of Gingrich with nostalgia for the 1990s. Next thing you know, we'll be talking about impeaching a Democratic president and shutting down the government. Maybe the 1990s really are back.