What's depressing as hell is that these lists are compiled of "essentials", yet the original NIGHT OF THE LIVING DEAD has yet to make anyone's list. Given that that film singlehandedly created the modern zombie - it's kind of hard to look at any of these lists without some objection.
Just my two cents since most of you have included the sequel which wouldn't have been made had it not been for the original, influential film, not to mention the other zombie films that y'all are listing.
If you're talking about essentials, or must haves, that one should be on everyone's list - not even at the top, but for crying out loud, somewhere.
Personal favorites, well, that's a whole other story now idn't it?