The Babadook

If's it's in a word, or it's in a look, you can't get rid of the babadook!

The Babadook has to be on the best horror films I have ever seen. For those who haven't seen this film yet, the story centres around the relationship between a mother and her child.
I won't write a long-winded synopsis, I will simply say that anyone who enjoys smart horror/psychological thrillers will love what The Babaodook has to offer.

For those who have seen it, what do you make of it? How do you interpret it? What is the babadook?