Didn't notice Littlefinger's accent change. And I was fine with the Jaime/Cersei scene, although I obviously didn't like what he did. And I couldn't really decide how much Cersei consented to it. I mean yeah, the repeated "stop it"s were pretty clear, but she definetely returned the kisses, quite passionately. But yeah, she most likely didn't want it more than she wanted it.
And while this was a step down for the likeability of Jaime's character, I don't think it's a step down in interesting..ness..
EDIT: And also, I hope we sometime get to see Barristan in action. So far we've only heard praise about how much of an amazing fighter he is, along with several moments now when he almost fights.