Both World War Z and Zombie Survival Guide by Max Brooks are brilliant. They will be making a movie based on WWZ soon I believe.
Heres the concept art for the film:
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I've also got them both as audiobooks, also very nice voice acting. Even includes legends like Mark Hamill!
This site has a pretty cool yet unfinished (so far 7 episodes) set of audio (pretty much audiobooks) podcasts, that you can also download to listen. Be sure to check it out if you're a hardcore zombie fan.
I don't think there are any other works like this. The Zombie genre is overall very underused, but I could recommend taking a look at the Walking Dead comic.
Funny thing, everytime I hear something about North Korea in the news my mind races back to what happened to North korea in WWZ, entire population simply vanished, imagining millions of Zombies trapped underground.
Fantastic book, Brooks took his inspiration from post-WW2 reports and interviews and ran with it within the zombie aspect. It's very insightful and layered, and most of all very realistic. Brooks did a lot of research on many levels and it shows.
A clever must-read for the horror fanatics
I actually read this book long before the Zombie Survival Guide. As great as the latter reads, my favourite bits in it featured the Zombie ‘sightings’ throughout history. Since World War Z consists of nothing but such tales, I love it totally.
I read it a long time ago, but even then one story sticks out in my mind: the one about the female pilot. Magnificent.
I finally got around to reading this - and its fantastic. I would recommend this to others here. Its NOT your typical Zombie Survival genre, it also has large elements of espionage, military, terrorism etc. In short, its pretty awesome.