I enjoyed it. One of the better zombie movies and good fun if you ignore some of the big holes in the plot. Brad Pitt is a seriously good actor these days.
If they were intelligent they'd eat biscuits and cake. Eating someones brains doesn't sound very intelligent to me. Its hardly a convenience food.
I couldn't eat brains; too much like semolina or that frogspawn stuff they used to give you at school.