Fantastic episode. Shame to see the Ponds go they were my favourite nuwho companions. Very well written and constructed episode, another great use of the weeping angels. The scene with the matches was clever and great acting from them all.
I wish they had a bit more on the relationship between river song and her parents though. Considering how much Amy mourns not getting a chance to be a proper mum. They rarely see her as shown by the slow invasion episode.
They'll be missed.