How brilliant is it of Katie Couric to get both Rush and Bush to do commentary for her news show:

Plans for the opening week of CBS EVENING NEWS WITH KATIE COURIC have surpassed network executives’ wildest dream: Presidents Bush and Clinton, radio king Rush Limbaugh and broadcast legend Walter Cronkite have all agreed to appear, a CBS insider reveals!
[…]
“It was Katie’s idea to bring Limbaugh in,” a top CBS source said on Sunday. “She is very excited he has agreed to appear.”

Create a buzz, get ratings because of your guests, beat your competition and then claim a ratings success. Also, if you do have a descent decent show, you may even keep your new audience.