Oh my gods, this started out promising. I"ll admit a slight bias, in that I've read the book that based this film, but thought the book was crap. Like the novel, the initial scenes of a technologically induced zombie apocalypse are quite well done, with a not subtle jab at the isolated self absorption living in our digital world induces. The onset is brutal and shocking, but that's about the only thing both film and novel have going for them. There is an attempt to 'evolve' the zombie scenario, introducing hive mentalities, zombie 'alphas' and hinting at greater agendas, but the film relies on old tricks and never actually takes an interesting idea thread to fruition. At gunpoint, I couldn't actually tell you the sequence of final events. The ending is surreal, and employs some dream logic only decipherable to the director and three audience members stoned to the gills. It feels like this film is more enamored with the star-studddedness of its main cast than presenting a coherent vision or narrative. In this way, I'd say this is a perfect adaptation of the source material.