I prefer the "rage virus" type of zombie to the classic "walking dead" type. Even better is a well-done mix of both - if you've read the Newsflesh trilogy, you know what I'm talking about. Slow, shambling, some of them dead, but some could potentially still be cured.
This is where I'll be collecting books that fit the theme even remotely, as long as the source of zombification is some kind of infection rather than necromancy. No offense to necromancy enjoyers!
First books of series only.