The Ticker: HDNet, CNBC, CNN.com…

> HDNet’s Dan Rather Reports will air an hour-long interview between Rather and former White House press secretary Scott McClellan, tomorrow at 8pmET. The interview was taped last week at the 92nd Street Y.

> CNBC’s John Harwood interviews Sen. Barack Obama today, with excerpts to be played during Street Signs at 2pmET. The bulk of the interview airs along with Maria Bartiromo’s Sen. John McCain interview at 8pmET tomorrow in a special, “Your Money, Your Vote: McCain vs. Obama.”

> The New York Times’ Brian Stelter updates the success of the CNN.com headline T-shirt business. “The site’s second-top-selling T-shirt is ‘Anderson Cooper, ‘you’re not my boo.”” he writes. But, according to a spokesperson, just, “‘north of one thousand’ shirts had been sold,” in total so far.