As usual, CBS was tooting its own horn at Carnegie Hall during its upfront presentation. Jo Ann Ross, CBS' president of ad sales, appearing in a jaunty purple suit like bandleader Jon Batiste playing the melodica, or whatever the hell it is that he plays at the beginning of the Late Show with Stephen Colbert—now the No.1 network late-night show in total viewers, a measure by which CBS is No. 1 as well.