Not from last year, but I saw it for the first time last year.
Get Out
One of the few horror films I can think of that addresses race (the only other I can think of is Night of the Living Dead); this is a really good film; bizarre and confusing in places, but makes its messages clear, and I found it enthralling.
Day 24: Best Horror Movie You Saw Last Year
Day 25: Favorite Classic Horror Movie
Day 26: Favorite Horror Movie Series
Day 27: Least Favorite Horror Movie
Day 28: Favorite Horror Movie Made for Kids
Day 29: Favorite Jump Scare
Day 30: Favorite Plot Twist
Day 31: Favorite Horror Movie