There's really only been on "miss" so far this season and that was "Sleep No More". And that's really saying something because as much as I love Doctor Who (been watching since the 4th Doctor when i was a kid) there are always a few episodes that you never have to watch again.
Can't agree - I thought Sleep no More was one of just two decent episodes. A misunderstood gem. It works if you think of it as meta-fiction - the Doctor and Clara were never on that station around Neptune. The whole things was a broadcast and you and I are back on Triton in the Morpheus boxes. The Sandman virus is taking over out minds slowly. We are aware of this on some level and the "Doctor" and "Clara" are parts of our minds trying to wake us up before we are turned into Sandmen. That is why Capaldi kept looking straight into the lens and exclaiming that nothing made sense and talking about eye dust - our minds were trying to overload us with nonsense so we awoke.
Absolutely loved Clara and thought her chemistry with Capaldi developed in this series.