RokTop, a Flex mashup by Josh Tynjala

Josh Tynjala has built a very cool mashup using Mate and Flint particle systems that combines the top musical artists on with the community conversations on Twitter.

He built the application to explore Mate and experiment with Flint. Even though this was a "learning tool" it is very polished and it looks great.

He says:

To me, [Mate] felt like I spent less time making the framework do its thing because I wasn't creating half a dozen different classes to get one minor action to happen, yet it still felt organized.

The source is available, so you can fully explore this fun app. He also posted some additional information in this entry.