I saw this last night, not sure if it has a US release yet, but I have to say this movie is epic win, for want of a better term. I expected it to be a mildly funny buddy-cop movie with some entertaining parts but it's not really what you think. It's from the creators of Shaun of the Dead which I haven't seen but I will actively go and search out now.
For those who haven't seen it, the trailer can be viewed here.
Can't wait for the DVD!