Dipity is a timeline web site where users can both create their own timelines and view other people’s created timelines.  It’s ver visual and has a great interactivity component to it9users can lcick on entries for more information.  It is a little more difficult to use but it produces beautiful visual timelines which can then be embedded or printed.  Students can research topics, events or people, create their own timelines, and print them out to hand in as assignments.  You can incorporate video, audio, images, text, links, location and timestamps.