Ratings-wise, the Katie Couric Evening News seems to be going nowhere fast, so CBS News President Sean McManus is bringing in veteran Rick Kaplan to stir the pot a little. Kaplan, who has run MSNBC and CNN, replaces Rome Hartman. Kaplan is tall (6 foot 7) and intimidating ("He's going to bend a lot of people the wrong way," somebody told the NY Post), but during the February sweeps period, the CBS nightly news was behind top-rated ABC by more than 2 million viewers - and that's a tough number to ignore. Said Couric in an interview on Tuesday, "I've never really obsessed over ratings." Yeah, well she had better start.