The ASP.NET Charting Controls have been announced last month. The charting controls are a nice addition to ASP.NET, which has already been discussed by Rick van den Bosch and Scott Guthrie.
When you would like to use the charting controls in SharePoint, consider using the ChartPart for SharePoint. ChartPart for SharePoint is a Web Part for SharePoint which generates charts from SharePoint lists. It allows you to quickly create graphs for use in dashboards or other SharePoint solutions.
It supports a lot charts, is configurable and has multi-language support.
Example column graph
Configurable chart properties inside the ChartPart Web Part
For more information, visit http://www.codeplex.com/ChartPart/