Just watched all of these back to back - what a great show.
The imagery is probably the most striking thing for me; the painting on the church wall was properly eerie. The acting, as has been mentioned is absolutely terrific. And I can't remember a TV show that's been so consistently well shot and directed.
Episode 4 is the weakest of them all though. Despite that incredible final scene, the stuff before that is really heavy handed and uncalled for. The moment when Ginger says 'if you help us with this, then...' was properly clunky. I immediately thought of GTA.
Still - what a marvelous show - if it carries on like this then it'll go down as an all timer.