Absolutely hilarious movie. I know everyone was supposed to like Shaun of the Dead as the best zombie-comedy, but I was not really a fan.
This movie was funny from start to finish, and I couldn't recommend it highly enough.
It's difficult to talk about without many spoilers, but it's very mild on the "gross" factor that most zombie films employ, and heavy on the comedy.
Definitely more action/character/comedy than it is horror.