Went to see this last night - such a good film I highly recommend it. Viggo is ace in it, probably trumping LOTR as his career high.
I really enjoyed how much like the Sopranos, it takes you a rollercoaster of moral hypocrisy - one minute you pity someone because they are after all only human; the next you are reminded of how flawed people are and the terrible things they are capable of doing.
Also the violence was brutally realistic - there's no bang bang you're dead. Dying people struggle, splutter and ebb off the mortal coil.
Finally fair play to Mr Mortensen for doing a fight scene with knives with little Viggo flopping around everywhere