Higurashi no Naku Koro Ni (When Cicadas Cry)
I've only watched the first two episodes of the show so far but find it quite good and plan on watching the entire series. The idyllic everyday school life contrasts well with the deepening mystery. I've never had the opportunity to play the video game but it looks really interesting. I don't know if it's ever been translated however.
The first DVD in the series is due to be released 2007-06-05, The sequel Higurashi no Naku Koroni Kai is due to air on Japanese TV in 2007 July. The screen shots are from the fansub done by The Triad fansub group.