Cracking ending - one of those plot twists which in hindsight is really obvious but I'll admit to not seeing it coming. The very last bit with Rick was superb in cementing his role as leader. However I still think it has been interminably slow to get to this point - could easily have shaved off the equivalent of two episodes without reducing the impact of that ending - but unfortunately that is a common failing of many American dramas.
By the way has anyone read 'rise of the govenor' yet? Picked it up a while back. I've never read a graphic 'novel' and at the risk of opening a debate about the merits of' graphic' vs 'proper' novels I have to say in my opinion it wasa good story, badly written and I can see why Robert Kirkman wrote the walking dead as a graphic novel - I don't think he'd have got published if that book is anything to go by...