For those of you who are looking for the source code for the filtering controls you will find the source code for the examples below as well as HierarchicalBrowser, the itunes like browser.  The actual source code for FilteredCollectionView, CompletionInput is coming soon.   Andy Mcintosh and I are considering starting a project on FlexLib for this where we will release the components as great examples of clean components that use a Flex 4/Open Flux style of developing components.   Stay tuned.

Also, I will be moving my blog to http://johnjwright.com soon, so watch for that.