Have been watching the New Yorker Conference on my iPod, and I thought Paco Underhill on "Deconstructing the Airport" (chaired by Malcolm Gladwell) was very interesting, for anyone who's been stuck in the misery of standing shoeless and beltless near a security checkpoint with all your carry-on items, all the the flotsam and jetsam of modern life, sprawled out on the cold metal stand at the end of the X-ray machine.
There are very nice props given near the end to Singapore - Changi Airport's playground is mentioned to encapsulate how an airport can really do things well. It's the little things, I suppose. Just the fact that Changi provides little push-carts for carry-on luggage that allow me to ease my shoulder from the burden of laptop toting is great, compared to previous experiences with the otherwise highly-regarded Narita. (Of course, it does mean I'm much more likely to shop, since I don't have to lug things around, so the airport benefits too.)