CNN's The Moment is probably the first official use of Microsoft's Photosynth technology for a major event. It was appropriate that its first use would be for the inauguration speech one of the most tech savvy administration to date.
Since the collection of images is spread over time, the experiment is more than just 'a moment'. It allows exploration of the scene from both multiple points of view and multiple points in time.
The result is a fascinating experience straight out of a scene from Blade Runner.
Keep an eye on this site - it will only get better as more images are submitted.
Update: As a bonus, here is a satellite view of the crowd assembled in front of the Capitol.