Well, a couple of things about airports.
Carpeted hallways are much, much better than tiled ones. Way less noisy, and less likelihood you will slip and almost break your laptop while running to make a connecting flight.
Those little golf carts with the blinking light in front and the siren...how come I never notice them until they're just about to run me over?
I'm not convinced boarding people by groups speeds the process up at all. It might keep people from fighting for position, though I've only ever seen that happen in Tel Aviv.
Any coffee company other than Starbucks is a welcome sight.
Air blowers in the bathroom: are they really necessary?
Portland has the best airport stores. Los Angeles has the nicest Admiral's Club. At Cedar Rapids, you almost never have to wait in a line, and your bag is likely to get the single baggage carousel before you do.
If you leave anything on the plane like, say, the four decorated Halloween cookies you bought in Iowa City to bring home for your daughters in L.A.--forget it. They're already gone.