Zombies are kind of a perennial.
I'm a huge Zombies fan.
Max Brooks' novel 'World War Z' is one of the greatest zombie stories ever written, partly for reasons that make it basically unfilmable.
Zombies are a fairly new addition to the cannon of monsterdom. Really, the modern zombie goes back just to the 'Night of the Living Dead.' There's a ton of material out there, but it seems like there's not a lot of diversity out there.
Zombie purists don't even call our zombies zombies, because to be a zombie you have to be undead. That's something zombie purists can fight about for years and years to come.
I was reading a lot of Jacques Derrida at the time, writing 'Beth.' He actually talked about zombies.
I didn't know I was a zombie pedant until I started considering what from the zombie canon to keep in 'Zone One' and what to ignore.
I also love the zombie genre, my zombie fandom going way back to 'Night of the Living Dead.' And 'The Walking Dead' is truly the ultimate representation of that sensibility in the comic book genre.