Just heading towards the end of season 2 on my second watching. I loved season 2 the first time round and I'm loving it even more! Season on is juat fantastic. I mean the first time you spend trying to figure out the characters, remember names etc and the second time you can just sit back and enjoy the whole drama of it all.
Also to people who have only watched it once...my memory is bad (drugs and alcohol don't help) don't the seasons blend in to each other? When you chat with a friend who's currently watching it for the first time and they're talking about it, it's hard to place the timelines. Well, for me it was.
A second watching puts all those timelines and characters together in place.