Ever since Degrafa's arrival, Degrafa and Adobe Flex are looking like a match made in heaven.  Degrafa simply offers what Flex is somewhat lacking: a declarative graphics framework.  To help prove that point, Degrafa's development blog demonstrates a handful of slick-looking custom graphs.  

Custom Graphs Using Degrafa:

Nike + site Graph Example by Joe Johnston

DataSet Example by Tom Gonzalez

Google Finance Example by Tom Gonzalez

Interactivity Example by Tom Gonzalez

FluxChart created by Ryan Campbell

Additional Resources: 

• Documentaion on Degrafa
• Download Degrafa
• Other Degrafa Samples