Via the official Google blog: Track Santa with Google.
"On Monday, December 24th, starting at 1 am PST, visit noradsanta.org to track Santa with NORAD on his annual trip. NORAD will use Google Maps to track several hundred of Santa's stops in over 200 countries and territories, and will embed videos of Santa's stops captured on their Santa Cams on the Google Map and post the videos on the NORAD Tracks Santa YouTube channel. Want to see more of Santa? NORAD will also provide a downloadable Santa Tracker file to track several thousand of Santa's stops in Google Earth. Santa's visits are only a few seconds long, and then -- poof, he's off to the next location. Click on the gift icons in Google Maps or Google Earth to learn more about the cities that Santa visits."