Google Sky, which until now has only been available via Google Earth, is now available to Google Maps developers. I've begun to put together a video map of the night sky. At the moment the map is in the early stages of development.
Hopefully I'll be adding a lot more videos over the next few days and at some point I'll be improving the design of the page. Also there is a bug in the Google Maps implementation of the Sky imagery that means strange things sometimes happen when you zoom in too close on the map. Hopefully Google will get around to fixing that in the next few days.
View the video map of the night sky.