Instruct: Classify a review as either positive or negative.
Query: Wow... a great, pivotal, episode.

The Weeping Angels are, if not the greatest of all Doctor Who monsters, certainly in the top two, and I think they were the perfect monster to set the scene of what we all knew was going to be a real tear-jerker of an episode, the departure of Amy and Rory. THere's also another visit from RIver Song, and what I think was the closest relationship we've yet seen demonstrated between River and the Ponds. More than that I don't really want to say, for fear of putting in spoilers. There have only been four episodes of the current season shown in the US so far as I write this, but this struck me as by far the best in every way.