This was a comedy
Not!
I watched this for the 7.5 rating on IMDB and Woody Harrelson and Emma Stone and Abigail Breslin, who is becoming quite the good actress starting with her turn in Little Miss Sunshine, which was a comedy. But this? I didn't laugh once, only staring at the screen in disbelief at the sheer inanity and stupidity of the film.
Did I mention that the zombies were disgusting?