Hey, you. Yes, you! The one sitting at your suburban Starbucks, complaining that the Valley is bland. Head over to Arizona Mills on a Saturday night, and you'll be hit over the head with the fact that you live in a "real" city. Just about any time, but particularly on weekend evenings, Arizona Mills is packed with activity, teeming with people of all shapes, sizes, ages and ethnic backgrounds. Most are waiting for a movie at the Harkins multiplex, but others are there for the carnival-like atmosphere ? complete with a carousel recently installed in the middle of the food court. The carousel's the only bona fide ride, but you might want to check out a painted-while-you-wait wife-beater, or the other wares set out on tables in the middle of the mall, ? la the streets of Tijuana. Or you might just want to grab a corner, stand back, and people-watch.