In recent years, a new wave of investigative journalists have become prominent. Some relish being "politically incorrect" (David Brock, author of The Real Anita Hill); others methodically shatter cultural icons (Douglas Frantz's expose of Washington insider Clark Clifford); and still others have revealed such horror as Cold War experimentation on unsuspecting citizens (Eileen Welsome's Pulitzer Prize-winning stories). In their own words, these journalists...