Katie Couric's trip to Iraq resulted in a new record low in the ratings race for "CBS Evening News." Still, there's an upside: "If CBS' hiring of Katie Couric was all about damaging the NBC Today show (rather than boosting the CBS Evening News) it's working. Today 'has lost about 360,000 viewers' in the past year, including 12% of women aged 25-54." [Kausfiles]