Zombies! discussion

Hello My Fellow Zombie Freaks. The conversation of "how" the zombie apocalypse happened has come up more then once in our group. I got to thinking, Just how many ways a zombie can be made. Zombie virus, Voodoo, Witchcraft, Alien infestation, Radioactive.. are there any other ways?
So maybe in this thread we can gather up some titles? I imagine this list will be long so I am going to start a thread for each of the ways that I know. If you have a different way, feel free to make a thread.
The point here is to gather up some names of books and movies of each method.
This thread is dedicated to Nuclear (Radioactive) zombies:

Radioactive Zombie Apocalypse: A Durable Mutation by Fritz Weiss ??

http://d.gr-assets.com/books/13283028...
Valley of Death, Zombie Trailer Park by William Bebb Caused by a chemical spill.

The original Night of the Living Dead kind of hints at this, but they never say for sure that it's the cause. The Return of the Living Dead movies confirm the theory, but they were the Return of the Living Dead movies.

Cherie Priest's Boneshaker - the zombies are created by subterranean blight gas

Here's a fun short story of chemical goodness, The Glowing Dead

State of Emergency - a movie about people who turn into zombies due to a chemical spill/explosion.

In the Troma classic Redneck Zombies, some nice Southern gentlemen accidentally make some moonshine with nuclear waste and everyone who drinks it turns into a zombie.

Not Troma, please.

Thanks everyone. Please keep listing. I think that we should have 20 books before we start a listopia for each of these categories?

"Corpse gas" turns the undead of the battlefield into zombies in "By the Blood of Heroes"

William Curl's "My Life As A Zombie" has a zombie bomb creating the apocalypse:

K.L. Robert's "Life in a Nuclear Town"

I will look into these...