Please forgive my expatiating on pronouns again. I just found it a lovely touch that the Lord of the Nazgûl deigns to use the more formal you with Gandalf at their confrontation at the broken gate of Gondor ("Do you not know death when you see it?"), but with the supposed, lowly warrior Dernhelm/Éowyn, he insultingly uses thou: "Hinder me? Thou fool. No living man may hinder me!"
This just makes Éowyn's laughing rejoinder all the better: "But no living man am I!"
And Éowyn is courtly enough to use you with the Witch-King before she slays him: "You look upon a woman."