I did see the following films
Children Shouldn't Play With Dead Things (1972)
Dawn of the Dead (2004)
Dawn of the Dead (1978)
Shaun of the Dead (2004)
Land of the Dead (2005)
Night of the Living Dead (1968)
Day of the Dead (1985)
Resident Evil (2002)
Dead Heat (1988)
There are many more zombie films available I haven't seen. I large list can be found here.
(Night of the Comet is not a true zombie film since none of the monsters are really dead.)
And I can't say I remember many of these films well, especially the ones made in the 1960s-1980s. It seems that zombies are almost always wanting to eat living people in them and sometimes focus on human brains. It led me to ask a very silly question: "So when did Zombies start eating brains and when did they stop?" Perhaps they found brains were too high in fat in most people? ;)
Other silly questions:
If Dr. Robert C. Atkins became a zombie, would we notice the difference?
What happens when you starve a zombie? Does he undie again?
Why do zombies need to eat at all?
Why should the slow moving zombie variety be that scary after awhile? (Just don't get surrounded by them and you'll be fine.)
How are zombies able to sense living humans so well? Wouldn't their own stench mask their senses?
Is a zombie different from someone who just raises from the dead?
Could Jesus ever be considered a zombie?
None of these questions are really worth answering accept for fun.
I can't say I gravitate towards zombie films. The story lines are somewhat all the same, (except in comedy versions like Dead Heat and Shaun of the Dead). I certainly find eating humans to be quite horrifying.
The idea of zombies goes back pretty much as far back as writing does, and probably further. The idea of what happens to the dead has consumed us as zombies consume us in film ;)