"Nightline" Ranks as the No. 1 Program in Latenight in Total Viewers and Adults 25-54 For the week of September 10, 2012, ABC's "Nightline" ranked as the No. 1 program in latenight in Total Viewers (3.349 million) and Adults 25-54 (1.212 million), according to Nielsen Media Research. "Nightline" was up week-to-week by double-digits in Total Viewers (+16%) and Adults 25-54 (+15%) to hit 7-week highs in both Nielsen measures - since w/o 7/23/12. NOTE: Due to the U.S. Open on Monday (9/10/12), CBS" "The Late Show" was retitled and excluded from the average. "The Late Show's" weekly average is based on 4 days (Tues-Fri). Week of September 10, 2012