Let The Right One In is another great foreign one. Don't rent it though, the cocksuckers that put the movie out on home video slacked off on the subtitles and refused to do a recall.
It's on Netflix streaming though, reportedly with the correct subtitles.
By the way, I bought the blue ray of this last week on this recommendation. Not was I was expecting at all, but a great movie none the less. I expected horror, instead I got a solid drama.