I spent a week or so researching the best time line building tools out there and I settled on TimeGlider. I am currently using it to develop a time line that shows the books being read in an American Literature class (complete with links to Google Books, copies of poetry and author bios) along with the historical events and themes that paralleled these works.
I would like to see someone develop the entire curriculum for a course using TimeGlider. It is flexible, interactive, aesthetically appealing and fairly easy to use. Try building a class time line to accompany your Social Studies curriculum, or a novel you are reading. Try using it to accompany, or even replace you CMS. You can link all class documents right to the time line!
Let me know how you are using time lines in your classroom.