Diary Of The Dead got a limited release here in Philadelphia and it came and went in a week. I didn't get to see it and my wife wasn't interested (her own words: "they're all the same"). While she may be right to some extent, there's a bit of freshness and spirit that makes Diary worth seeing. First off, you should know that this is a standalone film and not chronologically the fifth installment. This film functions like a sister to the original Night when the zombie outbreak first happens and no one knows what to make of it. College students are making a pseudo horror documentary film and they're suddenly immersed in zombie fodder all while the camera's rolling.
You can tell George Romero's creative juices are flowing more here than in the rather ordinary Land Of The Dead. That's not to say that this comes even close to the original Dead trilogy (Day Of The Dead being my favorite). George still tends to write rather broad dialogue. The main character annoys you in his overzealous ambition to keep the camera rolling even while his friends/crew are attacked in front of him and the film falls apart in the last 15 minutes. The good stuff is the zombie kills. There's not a lot, but what's there is original and ingenious. I guarantee you haven't seen these zombie kills anywhere else but here (I'm not going to say what they are 'cause they're that clever). After this, I really don't see George making anymore zombie films. I think he's covered everything he could and if this is his last, he's going out on a good note.