a DHTML-based AJAXy widget for visualizing time-based events. It is like Google Maps for time-based information.
Timelines are something that my upper elementary teachers use and have their students create. It would be interesting to work with some of them to learn how to do this. I'd like to get some of our students using these types of tools to develop timelines based on specific assignments, not to mention it could come in handy when explaining timelines to parent groups for things like curriculum adoptions, and for viewing the school's yearlong calendar.