LOS ANGELES -- Prince Frederic von Anhalt has sued Fox and Bill O'Reilly after the talk-show host called him a fraud for claiming he could be the father of Anna Nicole Smith's baby ... "Look, this guy's a fraud," O'Reilly said, according to a transcript of the show posted on the network's Web site. "We know he's a fraud. But let's _ what I want to talk about is _ he's done. His credibility is _ is finished." Since the show aired, von Anhalt said people give him dirty looks when he goes to the grocery store. "They say, 'Look,...