Looking for a great Halloween movie? Try Lake Mungo, an excellent ghost story made by Australians and told as a quasi-documentary. I think I like it better than another recent film from roughly the same genre: Paranormal Activity, which was a pretty darn good scary movie. Lake Mungo isn’t for everybody. It isn’t a lowest-common-denominator horror flick. It requires patience and it isn’t perfect, but it’s never boring and it pays off handsomely.