Here are some Aussie goods you may enjoy:
Snowtown is not in the supernatural category. It is based on a true story. It creeped me out a bit, and hit the right buttons for me.
Razorback is a monster flick. A wild boar goes on a murderous rampage. One of those movies you'll either love or hate.
Rogue is another monster film. This time with the more appropriate hungry hungry crocodile. Also it's made by Greg McLean who was responsible for Wolf Creek.
Along those lines is another croc film, Black Water. I love the soundtrack to this movie. The very talented Rafael May, who also worked on the soundtrack for
Road Kill. Which is a supernatural horror centered around a haunted truck.