I saw this movie off the internet some time ago. It is finally about to hit North American theatres. I suggest checking it out. They took a cheesy zombie flick and actually put a decent plot underneath it.
I have only one other comment. Watch for the 'gun nut' character and the point where he pulls guns (literally) from his ass. He's buck naked and pops two guns out from behind his back.....
I live in the UK and it's already on DVD here. Got it last weekend and watched it last night. It's really good. I mean a movie with zombies, aliens and zombie fish, how could you go wrong???
And the part with the 'gun nut' guy drawing his guns out his ass is fast but hilarious!