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 Alien Parasite or Alien controlled Zombies:

Two books that come to my mind where the zombies were created by aliens are
Cages by Chris Pasley
and
Year 50 by Geoff Bluske

I can not think of any movies A.T.T.

Adam Baker's Outpost

The Devil's Wake series of husband-wife writing team Tananarive Due & Steven Barnes

I've only read Domino Falls, so I can't vouch for the other books in the series!

Ryan C. Thomas' The Valace Standard

Zombies from alien parasitic creatures in Blood and Acid

Corpses are possessed by aliens in this YA book, Rise of the Corpses

The movie Slither had alien parasites turning their hosts into zombie-like creatures. That one was a good little gore-fest.

Tim Curran's Cannibal Corpse, M/C

Steven Roy's Black Redneck vs. Space Zombie

My review