Timeline mashups

Map mashups brought lots of interesting applications and have made location as one of the most important ‘attribute’ in many applications, particularly on the mobile phones.

I see potential for a similar ‘revolution’ in timelines. We want to see all events in time and also in space. How to create effective mashups showing evolution of events in time and also in space. In fact today, I am just interested in having a very simple and usable environment to display evolution and temporal relationships among events. The tool should be as easy as Google Maps (or Yahoo Maps) and should allow me to do animations also so if I want to see temporal evolution as temporal evolution – rather than a line on my screen – I should be able to see that.

Yes I know there are many timeline software in market and some of them have API but I have not found anything really compelling. Maybe I just did not find right way to use them. Did you find one that you really like?