Yeah. I don't know why I waited this long, either. Seriously. This is Buffy cut with Bridget Jones, mixed with 28 Days and blended well with a dash of Four Weddings and a Funeral. If you think that's an odd way to describe a film, well...you haven't seen it yet.
Ultimately, it's a cautionary tale about how many zombies we see and interact with every day of our lives, and how hard you have to fight to avoid becoming one of them.
So stop reading about it and just go see it.