Hard to watch or hard not to watch? For those who do not know, The Walking Dead surprisingly became the most popular cable show on American television of all time. Rick Grimes is a police officer in Georgia, who awakens out of a coma in a hospital to find a full blown zombie apocalypse has taken place. Early in the show, his goal is to find his family. The show not just "zombies" gone wild, but features some of the best character development of any TV show. Check out the-now world famous trailer from San Diego Comic-Con 2013.