Milwaukee's Best (airport feature)

I really like the Milwaukee airport.  It has a very nice and comfortable central commons area outside of security with lots of seating and multiple large TVs.  But one of the coolest things about the airport is something I haven't seen anywhere else.  They have giant monitors showing representations of where all the incoming flights are.  So you can look at a map of the country or region and see exactly where a particular plane is as it makes its way toward the airport.  I don't know exactly how useful it is, but it's pretty cool.