As much as I hate to admit it, many people love zombie movies. There are hundreds of these movies and they encompass many genres. Which makes zombies successful all-round movie stars worthy of our attention.
First off, some boring etymological stuff. The word zombie is of African origin (meaning "reanimated corpse" in voodoo cult), or is a Louisiana creole word meaning "phantom, ghost". The sense Sense "slow-witted person" is recorded from 1936.
Today, however, we know better than 1871 African people. Armed with knowledge of from the movies, we know that zombie means "a slow-witted reanimated ghost-like person"... or in other words "a groaning retarded undead motherf**ker who wants to eat your brains for no apparent reason".
Even Cracked.com has its modest contribution to short zombie movies - Going Green.