I'm very sorry to be the guy who brings it up, but regarding the death of the Witch-King of Angmar, when Merry stabs him in the knee, Tolkien writes, "So passed the sword of the Barrow-downs, work of Westernesse. But glad would he have been to know its fate who wrought it slowly long ago in the North-kingdom when the Dunedain were young, and chief among their foes was the dread realm of Angmar and its sorcerer king. No other blade, not though mightier hand had wielded it, would have dealt that foe a wound so bitter, cleaving the undead flesh, breaking the spell that knit his unseen sinews to his will."
Eowyn deals the killing blow, and she is certainly no man -- as the prophecy stated about how the Witch-king would die -- but it was not by her merit as a woman that she slew the Witch-king as much as it was that he was in a vulnerable state, and she alone among the guards of King Theoden stood in the path of Terror to defend her beloved Uncle. I think it's a beautiful story, not only about female empowerment, but that bravery is no respecter of gender, and each of us is called to stand in front of evil and hinder it if we may. Bravery is rewarded, even if it does come at a cost.