I didn't really know much about the film, but my date really wanted to see it and hey, who am I miss a zombie flick?
Well, it turned out to be a wickedly hilarious British parody of the quintessential "zombie film". The movie balances satire, belly laughs, and a tension perfectly. One of my particular favorite themes was how most people are 'zombies' anyway, and how they weren't all that different after the crisis.
Go see it, it's quality satire.