ABC and NBC are staging a rematch this morning of the memorable contest between Katie Couric and Sarah Palin in 2008.  Couric's interview with Palin in 2008  stalled the meteoric momentum for the vice presidential candidate and fueled the comedy writers at Saturday Night live for months. Now the two battle for top ratings between the Today Show and Good Morning America. Which news program did you turn to this morning: the Today Show or Good Morning America? Bill Carter is a media correspondent for our partner The New York Times and author of "The War for Late Night".