Day X is also on my list of zombie films to watch at some point – if you’ve seen it, let me know what you thought about it by leaving a comment!
In an underground research laboratory scientists from the fictional IDC experiment with biological agents when it erupts in a momentous disaster. A gas escapes, “series 14”, which contains an airborne pathogen. The deadly substance kills those it infects, producing toxins and changes the victims into extremely aggressive, carnivorous beasts who are virtually immortal. The bites of these instinct-driven creatures are deadly. Unfortunately, this organism gets into the atmosphere, where it triggers a nation-wide epidemic in short time.
My Rating: —
Interesting fact: This movie cost a lot less than you think…
Honourable Mentions for the letter X: Got none for you…
Days with the Undead 
I could check it out, but I’ve been wanting to see Warm Bodies (your last post).
http://joycelansky.blogspot.com
Check it out Joyce! There’s nothing like a good Zombie flick!