Saw World War Z - was kinda "meh" about it. There were some cool scenes and I liked how the zombies really did become like a force of nature, and they actually had characters take some smart protective measures (like magazines around the forearms).
But it had the same problem the new War of the Worlds did - it was happy to horribly kill off millions of faceless schlubs, but not the characters we're supposed to empathize with. I never felt for a second that Brad Pitt and his family were in any real danger, it just kinda felt like they were on the world's most horrifying amusement park ride.
The zombies didn't even act the same around Pitt - everybody else gets pounced on and slammed into the nearest surface, but they were apparently in awe of his star power and got slower and less aggressive. Zombie movies shouldn't pull their punches when it comes to main characters. It was fun overall but just much too Hollywood.