I do not know if this has been mentioned here or not, but I want to recommend "Toothless" by J. P. Moore. It's a zombie story playing out in medieval times. How cool is that?
Find out more here: J P Moore online dot com
EDIT: You can get Toothless as a free podiobook to listen to in your portable device. It's quite good. I listen to it while I am working.
Speaking of podcasts and audiobooks. I also want to recommend the audio drama podcast called "We are alive". It's a zombie apocalypse story that has a somewhat new take on the zombies behavior. Check it out at the zombie podcast dot com