I was a bit worried after the last episode which I didn't think was all that good but loved this one. Agree on Lestrade though - would be nice if he were a bit more than the dumb police guy.
I thought Moriarty was a Master type of guy really! Ok maybe a bit more camp ;-) I'm on the fence on him really, didn't particularly warm up to the character but also not against him. I'll have to see more of him to pass final judgement.
And well I did love it as well as admire it - the Cumberbatch/Freeman interaction is just too much fun to watch. Chemistry is such a tired old word but I really think they have it.