graphite: a portable graphics library, written in Java, JOGL and Postscript that allows rapid generation of high-quality graphs using an efficient, compact Java engine.
A heatmap, often called "Map of the Market"
A higherarchy viewed as a "Sunfire" or "Donut" graph
Candlestick diagram -- the workhorse of Wall Street
3d surface with contours (lighting not working properly)
A typical pie chart