I also liked Nanny, and Mama, both movies about different kinds of motherhood, one an immigrant and the other a supernatural being. There's an Asian movie called Umma, which I've not seen yet, but sounds very spooky. I'll watch that later this month. I also really enjoyed the US version of The Ring.

Oh, and the remake of Suspiria, which is based on the concepts of motherhood, and features the Three Aspects of Womanhood: Maiden, Mother, and Crone.