If you have even one percent interest in witchiness (not to mention whipping scenes) you really, really need to hunt up a copy of La Papesse (known in english as A Woman Possessed or The High Priestess). I got a handful of my own stills here.
This might possibly be the greatest thing I’ve ever seen. Also, if you see the stills from this film and think “Man I’d love to do something like that”, get a hold of me, I have a project for you. Still from La Papesse.