A Gallup survey released on Thursday confirms one secret to Katie Couric's lack of success. Whereas rival evening news anchors Charles Gibson and Brian Williams are viewed positively by 62 percent and 59 percent of viewers, respectively, Katie only merits a thumbs-up from barely half the sample. What's more, the face of CBS Evening News has a full 29 percent of respondents viewing her negatively, as in they simply "don't like her" - a likability that, the AP notes, arose during Legs' final years at The Today Show.