My sister Laura has a fantastic Joan Didion impression. I wish you could see it. She juts her hips out roughly fourteen feet in front of the rest of her body, then reverse-slouches her way into a room, bobbling her head under a pair of enormous sunglasses. "Helloooo," she calls in a merry, quavering voice that's mostly just a soprano's Julia Child impression. It never, ever fails to crack me up.