(Photo by: Allyson Riggs/NBC)

Friday, January 27, 2017 ratings — New episodes:  Grimm, Emerald City, Dateline NBC, The Vampire Diaries, Crazy Ex-Girlfriend, Rosewood, Sleepy Hollow, Last Man Standing, Dr. Ken, Shark Tank, and 20/20.  Reruns: MacGyver, Hawaii Five-0, and Blue Bloods.

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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?