"Flyboys" is the latest example of how easy it is to be ambushed by mainstream popular culture. This book may have hit best-seller lists, but its popularity is no guarantee of the benign. Think of all the budding book lovers who raced out to read "Harry Potter and the Order of the Phoenix," only to be regaled with a gruesome showdown at the end of the story. Think of the audiences who briefly made the hyper-gory "Kill Bill: Vol. 1" the nation's hottest movie, only to discover that it had all the wit of a falling brick. And now look...