Given that the first episode of AMC's The Walking Dead was a ratings smash, drawing over 5 million viewers, and that last night's audience dipped just a bit to 4.7 million, this should come as no surprise: AMC has renewed the zombie series for a thirteen-episode second season. In the words of an executive, "I wish all programming decisions were no-brainers like this one." (Rim shot!). Between the four remaining episodes of the show's first season and the forthcoming thirteen, you can look forward to lots of zombie kills that will — somehow! — be grosser than this.