Inspired and based on Andrew Godwin's LastGraph (I'm also using data harvested by him, thanks!) I'm working on a Flow Flex component for representing flow trends. It's still kind of rough, so the source code is still pointing to the RojoRed branch I opened up for it. I'll update the link once the component is completed.
Check it out working here (FP10 is required).
Here's the component's code and here's the example's code.
A couple of interesting things on this example might be the dynamic path drawing using Degrafa (FlowGeometry) and the use of my friend Drew Cummins' super Green Threads framework for making my still incredibly unoptimized data parsing possible ( ParseWeeksProcess, LastFMDelegate).