And it’s for jQuery none-the less!

http://code.google.com/p/flot/

From their site:

Flot is a pure Javascript plotting library for jQuery. It produces graphical plots of arbitrary datasets on-the-fly client-side.

The focus is on simple usage (all settings are optional), attractive looks and interactive features like zooming and mouse tracking.

The plugin works with Internet Explorer 6/7/8, Firefox 2.x+, Safari 3.0+, Opera 9.5+ and Konqueror 4.x+ with the HTML canvas tag (the excanvasJavascript emulation helper is used for IE).

Examples

FlotUsage has plenty of examples of people and companies using Flot. Make sure you check out the examples.