I had seen Grave Of The Fireflies when I was a kid and I had a distant memory of this movie. I just watched it again (or should I say for the "real" first time), and it's just brilliant.
So beautiful but so sad at the same time, it's hard not to cry at the end... the music is great and sad too, and so are the characters, especially Setsuko of course.
Great movie but really "disturbing" in a good way.
If you have never seen it you should really watch it!