Norad runs this every year. Starting on Christmas Eve, usually first thing in the morning, you can check the site about every hour to see where Santa is. There is downloadable videos of where he is flying. I have done this with my son for the last 2 years and he absolutely LOVES it. I would strongly suggest that if you have little ones that you check this site out. Heck, I like watching it myself!!
http://www.noradsanta.org/
http://www.noradsanta.org/