I just can't get into the Potter fantasy universe: I found the books unreadable, and the films palled.

I shall definitely go to see TLTW&TW, to cheer for the Witch. (The Christian subtext did not bypass me, though I don't think I picked up on it till the later books - The Last Battle angered me. However, I believe in subversion as far as possible.) Jadis is indeed spectacular, though I thought Pauline Baynes drew her better in The Magician's Nephew. I always found the drawing of her being mauled to death by Aslan distressing, and wanted to rescue her. The kids I just found twee and annoying.
I still relish the evil notion of Mr Tumnus revealing himself to be a satyr, not a faun...