With The Walking Dead shattering ratings left and right, it should come as no surprise that geek god Nathan Fillion counts himself among the fans of AMC’s hit zombie drama. That’s why the Firefly and Dr. Horrible alum penned a love letter for EW: If you are looking for a recap of the last episode, you are going to be disappointed. There are no tidbits or insights about "What do you think this character will do?" here. This is a love letter.