Oh yeah, WAY better than I was expecting. Very much worthwhile, and with some great little contributions to the overall zombie movie genre.
I was recently reading a great big book full of zombie short stories, and there's one thing I learned from it was that there are many different but still very interesting interpretations of the zombie genre. I've heard some of the criticisms some have made about this movie, but if you watch it as just another interesting and different take on the genre with some style choices made to help with the story it wants to tell, it comes across much better.
But very, very funny. Corddry was HILARIOUS.