Maybe Katie Couric never really had a chance this year to prove herself as the anchor of "The CBS Evening News." Fans, critics, bloggers, comrades and competitors had a field day throughout 2006, breathlessly complaining about everything under the sun. When rumors initially spread that CBS wanted her, the debate began heating up and seemed to take on a life of its own: Katie Would Be a Fresh Alternative and No, Katie Would Be a Disaster. She'd Lighten Up the News and She's Too Perky for 6:30 p.m. Then, on the air, Katie was Too Serious -- no, she was...