I haven't watched the new version of the ring but have seen that japanese one - it was good.

I actually got scared by jeepers creepers and darkness falls!!

One film which is VERY gory and has some awful black humour is battle royale - another japanese film. It is certainly something naughty teenages should watch!!

Why not go for the old ones such as the orginial Friday the 13th. The bit at the end always makes me jump.