This was the only show I faithfully watched on t.v. in a long time. At first I was watching it just because of the zombie element but they really did a good job making it more than just a gory mess. Albeit I did get my gore fix it surprised me that it was much more suspenseful and dramatic.It's gonna' be a tough wait for the new episodes, but as I read through this thread it turns out there's books or comics? Gotta check that out.
The Walking Dead is adapted from the ongoing comic book series which started in 2003. You can get the graphic novels at your local comic store or online here.