BENOIT DENIZET-LEWIS, one of the most perceptive and interesting journalists writing today, takes us into some unusual precincts of American society in American Voyeur. Denizet-Lewis made news with his New York Times Magazine cover story "Double Lives on the Down Low," included here, which ignited a firestorm by revealing a subculture of African-American men who have sex with other men but who don't consider themselves gay. In...