My good friend Rich turned me onto this series, and I'm glad as hell he did. The Walking Dead is, in some respects, a classic Zombie-story (yes, they shuffle mindlessly, and yes, brains are on the menu) but it's so much more.
It's really a psychological study of survivors under extreme circumstances, and the lengths they go to to keep their humanity intact. I don't want to spoil anything, so I'll just point out that Amazon is selling all 4 trade paperbacks for a decently-discounted price! (And you can also pick them up one-at-a-time at the infinitely cool World Famous Comics.) Oh, and the artwork is phenomenal, too.