Wild Ideas Generator
Try using this tool to get your creative juices flowing before a brainstorming session. The generator creates random phrases consisting of an action word, a description, and an object name, such as "answer retail voices," "stop cellular workstations," "anticipate foreign forecasts," and so on.
http://www.brainstormingatwork.com/wildideas/index.html

Mind Mapping
James Cook University Study Skills Web Site
This site provides interactive tutorials on how to use mind mapping, both as a general study aid and in preparation for writing.
http://www.maps.jcu.edu.au/netshare/learn/mindmap/index.html

MindGenius
Ygnius
This commercial software is designed to help both writers and business managers brainstorm and organize their ideas. Easily create mind maps and export them to Microsoft Word and other programs in map and/or outline form. You can download a full-featured evaluation copy that is good for twenty uses before a site license must be purchased.
http://www.ygnius.com/site/0_home/default.asp?lang=us