We started using MindMaps to capture the essence of each book chapter.  The results are looking good so far; you can check out the first episode (Chapter 4: Creating Positive Change) right here:

http://bizbookclub.net/mindmaps/developing_the_leader_within/MindMap.php?maptitle=Creating%20Positive%20Change

****(Remember to use Internet Explorer 6.0 or better and download the MindMap plug-in when prompted)****