Jon Stewart will brave the wilds of Fox News tomorrow to appear on Bill O’Reilly’s program for the second time. But why? “Stewart wants to be on the highest-rated show in cable news,” a source joked to the New York Daily News. Whatever the impetus, the two cable giants are expected to discuss the Obama administration and the media, or whatever. The interview will air tomorrow night and Thursday on the O'Reilly Factor. (More Jon Stewart stories.)