Not quite sure if this will fit your requirement, but www.spill.com
usually have some good things to say about movies in general, and they seem to love a good horror flick. I generally go for their audio reviews but the animated ones can be a hoot.
We're in the process of putting together a weekly podcast, but we tend to cover Downunder horror and books. We're thinking of 20-30 minutes with a Downunder horror flick, a book, and one of the latest horror releases covered each episode. The true terror here will be my Trans Tasman accent, I both strangle vowels and talk with a Strine accent