On the way from Terminal C to Terminal B at O'Hare Airport in Chicago, I always enjoy the lights and tinkly sounds of Helmut Jahn's tunnel, with lights above shimmerring back and forth in rainbow colors as people stand or run along the moving walkway. The repeating, echoing voice warning "The moving sidewalk is about to end. Please look down." is sprinkled with surreal chimes and bells. As usual, my incoming flight was late and when I got to my gate everyone was already on the plane. I couldn't have moved much faster and was glad I packed light.