A few tips to get you started: If the movie is in black and white or has subtitles, chances are good it's not a guilty pleasure. (There are exceptions: Hong Kong martial arts extravaganzas totally qualify.) If the movie has won an Oscar for anything other than Best Sound, it probably won't elicit the elitist ridicule necessary to make our Top 10. "How Green Was My Valley" is not a guilty pleasure. "Howard the Duck" is. "The Big Sleep," not so much. "Big Trouble in Little China," definitely. Anyone mounting a passionate and credible defense for "Ishtar" or "Waterworld" will get a personal thank-you from the editor.