USD - perhaps at the bottom of a small channel (black) and the middle of a larger channel (blue). <a href="http://stockcharts.com/h-sc/ui?s=$USD&p=W&st=1990-01-01&en=2008-06-04&id=p04815862331&a=6479627" target="_blank">http://stockcharts.com/h-sc/ui?s=$USD&p=W&st=1990-01-01&en=2008-06-04&id=p04815862331&a=6479627</a>