Thursday, March 19, 2015 ratings — New episodes: American Idol, The Slap, The Blacklist, The Vampire Diaries, Reign, Grey’s Anatomy, Scandal, and American Crime. Sports: 2015 NCAA Basketball Tournament. Specials: Dateline: The Real Blacklist. Reruns: (none).

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These are the fast affiliate ratings. The percentages represent the change since the previous original episode. (Percentages aren’t given for reruns or specials.) To see past ratings for a particular show, click the show’s link. The show pages are updated with the daily final ratings when they become available. Those pages include season averages to date.

What were you watching last night? Original network programming, reruns, cable, or something else?