On July 22nd there will be a total eclipse of the Sun that will last for over 6 mins that is visible from within a narrow corridor that traverses half of Earth.  One of the best regions to see it will be China and the organizers have published a WorldWide Telescope tour previewing the Eclipse.

viewInWWT

See the trailer (below) for the project, "Multi-site Federated Live Broadcast of Solar Eclipse on July 22, International Year of Astronomy 2009"