Norad website
Personally I think its pretty cool, I cant imagine many other military institutions doing the same thing.
P.S heres an awesome wired article on it
check it out
I like the fact that this tradition started because "Sears-Roebuck had put an ad in the local paper listing Santa's phone number, but the number was misprinted. Instead of ringing the department store, it rang CONRAD's (the fore father of Norad) ops center. Shoup got the first call, and rather than being a Scrooge, he told the tyke, "Let me check the radar."