Just wanted to let you all know that your kids can track Santa with Google Earth. I know that NORAD does this but it looks like they hooked up with Google Earth this year. You can follow him from city to city, right now he is in a city in Russia. Its fun cause everytime he goes to a new city, GE follows him.
Google NORAD, then after the little into, scroll down to track Santa with Google Earth and have fun!