The fast food industry has taken its share of hits in recent years -- from "Fast Food Nation" to "Super Size Me" to Oprah's campaign against factory farming (although she did shill for KFC in 2009). It just keeps on truckin', though. You've probably been living under a rock if you haven't realized how unhealthy fast food can be, but do you know exactly how many calories were in that Double Six Dollar Burger you just ate? Find out that (horrifying) number -- and lots more -- in our fast food quiz.