LOL Door Pwnage (2 door pwnages)
Door pwnage 1: When a Zombie chases you into a room close the door when it is near the entrance. It wil launch the zombie backwards and probably kill it.
Door pwnage 2: Sometimes when killing a zombie through the grated bars of a Safe Room Exit. You will see it's arms dangling from the bars. If you are looking for fun then repeatedly whack it and it will swing back and forth, back and forth.... XD
P.S No doors were harmed during the makings of these Pwnages... LOL XD XD XD