I've finished reading World War Z a little while ago.
The book is really good, I love how the writer "interviewed" the characters like they do with survivors of WWII.
And I fail to see why the movie even shares the name. The only thing it shares with the book is that it's about zombies. Nothing else. Not the characters, not the story, not the events, nothing. They could've made a masterpiece of a horror movie, but they just made your average zombie movie out of it.