how have these not been posted before!?!? these are absolute classics that were around at the 'beginning' of the genre
Origin Unknown - Valley of the shadows:
http://www.youtube.com/watch?v=9uY1jQkWwYE
Ray Keith - Terroist
http://www.youtube.com/watch?v=Opkdc8e4bWY
Shy Fx - Chopper
http://www.youtube.com/watch?v=3FRT08MdwnA
Probably because most of us have heard them 10000's of times