New Jersey's Republican Gov. Chris Christie joins forces with Newark's Democratic Mayor Cory Booker in an amusing new video partially inspired by Seinfeld, the Washington Post reports. The video, which was shown at the New Jersey Press Association's Legislative Correspondents Club dinner yesterday and quickly went viral, shows Christie constantly being upstaged by the heroic mayor ("Booker!")… until the tables are finally turned when Mitt Romney calls looking for a running mate. (More Cory Booker stories.)