Aside from its fantastic cast, juicy mysteries, heart-pounding drama, there's one thing that really makes the CW's iZombie pop: Brains! Each week, Liv Moore (Rose McIver) eats the brains of murder victims to gain access to their memories and personality traits, meaning each week, Liv takes on a whole new challenge. Some are great, some are fine, and they're all here in our ranking of all the brains iZombie has ever eaten.