I was never sure what to expect, I was expecting a corny screw ball comedy but what I actually got was a movie with depth... Strange.
The comedy is a result of the sit. the characters are placed in just dealing with life and the world, not trying to force a funny line into the situation rather letting the humor come from it. (Many writers seem to forget this method)
The movie itself is very well shot and has a point to it. I really liked this movie, and yes it is very funny.
Go see it, this is not a screw ball comedy rather a zombie smash fest with classic humor and great character development without a 1 hour explanation of who each one is.