I'm working on an import panel very similar to Immegration by Lloyd Alvarez: http://aescripts.com/immigration/. If I succeed I'll definitely be posting it up for free!
To be specific the user feeds in a root folder and my script recursively drills through and builds up a treeview hierarchy of all sub-folders and image sequences (example screenshot attached). Now I want the user to be able to select folders/items from the treeview and hit "import". Simple enough right?