The Horror of Hair Extensions
I don't speak Japanese, but this appears to be a trailer for Ekusute, an awesome-looking horror movie starring Chiaki Kuriyama (Battle Royale, Kill Bill) about cursed hair extensions that attack the people who wear them. Insert joke about bad hair days.
When are the Weinstein Brothers gonna remake this? Combine Ekusute with the Barbershop franchise, and you'd get a crazy, cross-cultural horror-comedy about the world's most evil weave.