Ways to visualize a point on a scale on a web page

I am looking for recommendations to visualize points on a scale on a web page. A Gauge type of representation, as provided by Google, or a bullet chart as provided b开发者_如何转开发y Protovis seem to be good candidates. But perhaps there's more. (Or perhaps there are some libraries that do something similar that I haven't seen yet.)

I would suggest looking at some of the things you can do with Raphael and g.Raphael. It is a great pure JS library that lets you do the charts you suggest and a lot more. The interaction you can add with it is pretty interesting.