Few days back Scott Hanselman blogged and about  this amazing AJAX Timeline Widget developed by some guys at MIT.

Timeline is a DHTML-based AJAX widget for visualizing time-based events. Timeline can be used with zero software installation, server-side or client-side. And like Google Maps, you can populate Timeline with data by pointing it to an XML file.

How to create Timelines
Timeline Examples

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The ASP.NET AJAX 1.0 Documentation is available for download and can now be easily downloaded for offline usage and Nikhil has updated his cool UpdateHistory Control for the final version of ASP.NET AJAX. This allows developers to add history entries to the browser's navigation stack selectively for some post-backs.

The package contains the following controls, which includes the initial release of a couple of new controls.

UpdateHistory

This is a non-visual control that allows you to add history entries to the browser's navigation stack selectively for some post-backs, and not for some others. This helps fix the back button to make it work, and allows you to implement Ajax patterns such as "logical navigation" and unique URLs.

StyledUpdatePanel

A simple derived UpdatePanel that adds CSS class semantics. A simple addition, but a useful feature, nevertheless, that didn't make the feature cut.

AnimatedUpdatePanel

Another derived UpdatePanel that displays new content using a variety of animations or effects: slides, wipes, cross-fades as well as a visual highlight. This allows you to implement the "visual notification" Ajax patterns such as the one second spotlight and one second mutation.

Downloads: Binaries, samples and source code | Video on Channel9