Probably the best zombie/ghoul movie I've ever seen, and arguably the original. (Zombies of afro-haitian folk lore did not eat people. Romero called his monsters ghouls not zombies.) Perhaps Shawn of the Dead is a good contender too, but it's not of the same genre. Generally modern zombie movies lack substance, with people screaming, running, and getting eaten, displacing most plot and dialogue. This is not that kind of movie. It is about people as much as it is zombies, and explores human weakness and failures to come together in a crisis that should have been survivable.