Japanese horror movies don't come much better than this. A mysterious video tape kills people seven days after they watch it. One TV reporter tries to uncover the mystery which leads down several dark paths.
It was re-made into a Hollywood movie that tried to 'improve' it but only resulted in making it un-focused. If you're lucky enough not to have seen the re-make yet, do yourself a favour and grab a DVD of Ringu and get the living daylights scared out of you.
9/10