Didn't realise there was already a thread on this - good job i searched!
We have only had this in the UK this year, and I devoured the first series (and bought it for my hubby on dvd for a father's day pressie - bwahahahahaha!).
Now at episode 3 series two and have seen what was posted about it so I am all excited as I watch it.
If anyone has missed this show - really, get hold of series one RIGHT NOW and watch it. Not only is each episode excellent as a stand-alone, but the overall story is brilliant - at times a tad gruesome for me, particularly the last few eps of series one - but one of the best things I have seen on TV in a long time.
Go on! Watch it NOW!