This isn't exactly the right sub-forum, but whatevs...
In my opinon, a good zombie movie is not just about killing walking meatbags, and I'll elaborate:
First off, the feeling that someone/something is constantly following you, never stopping, always closing in, not necesserily quickly, but moving nonetheless. The thought that whatever you do and whereever you go, it will always come for you, you can run, but you cannot hide. Also you can kill it, but still... there are like a bgillion of them.
Secondly, I prefer the source of the outbreak to be scientific, like a virus or something. Not any of that voodoo crap.
A zombie for me is an infected human, not a rotting skeleton who arose from its grave.
I don't like the fast zombies. Zombies are supposed to be slow, stupid things. Hard to kill, but slow.
It is also mandatory that their only weakness is a good round to the head, or a well placed decapitation.
Zombie movies comes in many forms, but I prefer the ones that focus on the survival of a small human group in either a; urban, sub-urban or rural area/environment.
It is important to focus on the essentials, like food, water, transport, fuel, heat, clothing, weapons and ammo.
I often imagine myself as the only living human left on the planet, not with a zombie apocalypse going on, just me.
And what I tend to do in my daydreaming is break windows and loot stores, just go crazy with everything left behind by the human race, and a zombie apocalypse gives you just this opportunity. Just being able (as in Zombieland for example) to do whatever comes to mind, without having to think about other peoples responses, or the "authoraties" is just a dream come true. I swear, I'm looking forward to the Apocalypse (that's if I survive the initial outbreak of course).
In essence, a zombie movie is about 4 things:
The freedom to do whatever you want with whatever you please
Examples include: Looting, scavanging, blowing up stuff and playing dominoes with wrecked cars using a crane
Having the ability to bring out the best (or the worst) in both yourself and your small group of survivors
Examples include: Bonding with the other survivors, trading skills, bluring out social differances, fighting with eachother and sacrificing yourself for your group. Trauma, experiences, love, hate, etc etc...
Having the time and opportunity to create the most devious devices and structures to ensure your continued survival
Examples include: Constructing a dune buggy with heavy machineguns, making a small fortress in a building, build an armored bus, or setting up a small survivor community, tending a farm, or just fixing a radio.
And last but not least: Killing moving things that shouldn't move
Good examples, and why they are good:
1. The Walking Dead
This series is so great because it's about a group of people who prior to the outbreak had no social interaction.
They are forced to work together and bring all their skills to the table in order to survive.
They are few, and every man is important and irreplacable.
They travel in a convoy of a few cars and an RV (camping car thing).
They loot stores for what they need and move on.
Situations arise when they meet other groups of survivors and and are forced to co-exist and either share supplies or kill the others and take theirs.
HUMAN MORALE, ETHICS AND SOCIAL BEHAVIOUR IS VERY KEY FEATURES TO PICK UP ON IN A POST-APOCALYPTIC MOVIE! (check out The Book of Eli or The Road)
2. Land of the Dead
The movie is about a small walled in island community of survivors relying on the scavangers who retrieve stuff from the nearby city to survive.
They have built implements to help them in their task such as a rolling fortress of a bus, and other things.
They try to survive alongside the zombies on the mainland, defending their little island.
They have an interesting post-apocalyptic economy, resembling that of Fallout 3. A bit like feudalism acctually.
3. Zombieland
This movie is just a joy to watch, it's a parody, but it's still very relevant.
The people in the film develop feelings and bonds with one another, eventually turning into relationships.
They do whatever the hell they want, trashing shops and eating candy all day and whatnot.
Also check out:
The Zombie Survival Guide
World War Z
all the "xxx of the Dead" movies
L4D1 & 2
+++ misc
Hope this helps.