There are more AMV's with the Higurashi opening than I care to count. Here are a couple:
http://www.youtube.com/watch?v=J8sgzZiIhQc
http://www.youtube.com/watch?v=h9O4zjQM3QU
If only I could get some of the images from this AMV... and I heard Higurashi somewhere in this song:
http://www.youtube.com/watch?v=2HCKXULWYZE
And these freehand drawings of Higurashi were just too good for me not to spam:
http://www.youtube.com/watch?v=s5IRUgmQzC0
http://www.youtube.com/watch?v=YI2EQH5mT3s
This one has english subs:
http://www.youtube.com/watch?v=JvWWbyNc6J4