My pick this week is a specific depiction of Morgan le Fay from one of my favorite books The Mists of Avalon by Marion Zimmer Bradley.
A little background on the character from the book (from Wikipedia):
The book follows the trajectory of Morgaine (often called Morgan Le Fay in other works), a priestess fighting to save her matriarchal Celtic culture in a country where patriarchal Christianity threatens to destroy the pagan way of life. The book follows the lives of Gwenhwyfar (Guinevere), Viviane, Morgause and other women who are often marginalized in Arthurian retellings. King Arthur and the Knights of the Round Table are supporting rather than main characters.
The Mists of Avalon is in stark contrast to other retellings of the Arthurian tales, which consistently paint Morgaine as a distant, one-dimensional evil witch or sorceress; with no real explanation given (or required) for her antipathy. In this case Morgaine is cast as a strong woman who has unique gifts and responsibilities at a time of enormous political and spiritual upheaval; as she is called upon to defend her indigenous matriarchal heritage against impossible odds. The Mists of Avalon stands as a watershed for feminist interpretation of male-centered myth by articulating women's experience at time of great change and shifts in gender-power. The typical battles, quests, and feuds of King Arthur's reign are described as supporting elements to the women's lives.
I am particularly fond of this retelling of the Arthurian legend, and Morgan le Fay, because it portrays Morgaine as a sympathetic character who sets into motion events entirely by accident and chance. She does not willfully entice Arthur, her brother, into a tryst in order to bear a son by him...a son who will later seek revenge (Mordred). The story of Morgaine and the other women in Mists is taken to the level of strong female characters fighting to preserve a way of life against the tide of male-dominated mentalities and Christianity.