CNN invented the 24/7 cable news model, but now the network finds itself in last place as three of its four primetime programs trail all other competitors. The dip in the standings marks a low point in the history of the channel. Playing the straight man between the left-leaning MSNBC lineup and the right-leaning Fox News doesn't seem to have paid dividends in viewership. Adding insult to injury, the CNN-created Headline News is outperforming the parent network in valuable time slots. Anderson Cooper, perhaps CNN's most recognizable face, is getting beat by Greta Van Susteren and re-runs of Keith Olberman and Nancy Grace.