I am not really surprised that Listen gets such a positive echo here, because I think this was maybe one of the best episodes of those I have seen so far! I loved the creepy factor, as Moffat is really good at (take Blink as reference!) and I loved the references, I did notice that the fear and companion thing was a quote, but would never have guessed that it had been from the very beginning that makes it even better for me - good work keeping it all together and I start to hope that Moffat will stay for a long time, I doubt if anyone else has that overview and dedication to the full story (but, I bet, when he goes they will find a good replacement - maybe Gattis?)
Great season (or: Series in UK English ;-)) so far!
As to the problems of the Americans with Cappaldi: Ain't no chewin' gum speaker folks so pay attention and learn where your language has come from