If you work in a technical field, or manage projects this resource is FANTASTIC, and it's free (courtesy of a DARPA research grant). Earlier today while participating in the project / chartering definition phase of a project at work, I watched a colleague use a neat tool for visually defining and linking the parts of a project. Not only did the software seem easy to use, but the visualization really encouraged all the team members to participate.
After the meeting, I linked to the software site (IHMC Cmap), downloaded the software, did an install ... and in almost no time at all found I could use the mind mapping / process mapping software. The user interface was very intuitive.
I've linked two items below ... one is a Powerpoint file which gives annotated screenshots of the IHMC CMap user interface. The other link is to my example (i.e. a completed process map):