Fantasy consists in a morbid fascination with unrealities, which secretly transforms itself into a desire to make them real. Imagination is a form of intellectual control, which presents us with the image of unrealities in order that we should understand and feel distanced from them. In imagination we dominate; in fantasy, we are dominated.
World War Z was a great zombie film because those were zombie performances. It wasn't just a bunch of people walking around slow. They did close-ups on zombies who were performing, as a mindless dead thing. They were creepy and scary.