The dutiful Media Matters researchers who stare at Fox News all day have flagged another humorous mistake made by the cable news network: Fox accidentally swapped Mitt Romney's face with Barack Obama's in an Iowa polling segment today. As the progressive think tank later reported, Megyn Kelly apologized for the error on air, saying that "we put a graphic on the air ... that, as it turns out, was incorrect. It identified Mitt Romney with a picture of Barack Obama. As it turns out, they are not the same man. Not philosophically, not ideologically, not in any other way. So we apologize for that error."  Feel free to read as little or as much conspiracy into the mix up: it still ranks below the time the cable network used a Tina Fey picture for a Sarah Palin segment.