That's pretty funny, Chuck, but I think CBS jumped the shark quite some time ago. When I lived in Atlanta, about ten years ago, Rush Limbaugh at one in the morning had better Nielsen ratings than Dan Rather at 6:30 in the evening.
I don't think Katie Couric will be any worse than any of the other babes reading the news. She's intelligent. When I was a kid, the TV networks got their news people from newspapers; but for the past twenty years they have gotten them from local TV news channels. So I think both the men and the women lack the smarts to be good at the job. Nowadays they're just pretty faces.
But in regard to Couric, she's one more liberal. While the liberals divide their audience among the three networks, PBS and CNN, Fox News has the conservative audience all to itself. So I don't think that Roger Ailes is shaking in his boots over this, but the folks at ABC might be concerned.