I just bought the theatrical BDs (they were so dirt cheap that I just couldn't not - I paid like 10 bucks for the whole trilogy) and I skimmed FOTR and what's interesting is, that the DNR seems to have been applied selectively - there are many scenes, which look beautifully detailed, with a natural layer of grain and then suddenly cut to the next scene (for example when Gandalf first comes to Hobbition and there's a cut from the shot of him standing outside Bag End to the shot of him entering the door, shot from inside the Bag End interior) and suddenly it's a grainless muddy mess and it stays that was throughout the whole interior scene - in fact, all the Bag End interior scenes seem to be affected by the DNR, whereas the exteriors look great. I really wonder why they did this, because judging from the HDTV captures, those scenes weren't any grainier or dirtier than the others.