the americans
hannibal
game of thrones
sherlock
downton abbey

I'd put Jessica at 2 or 3. The top four, for me, are much better than the rest and it definitely deserves a place there.

Most of my top shows are newcomers, so its tough to rank the decade. For shows that have had at least two seasons though;

1. Game of Thrones
2. The Legend of Korra
3. Rick and Morty
4. Review
5. Veep

12. True Detective
11. UnREAL
10. Mad Men
9. The Walking Dead
8. Louie
7. Halt and Catch Fire
6. Broad City
5. The Mindy Project
4. Fargo
3. American Horror Story
2. Community
1. Once Upon A Time

Very happy with 2015 TV, finding 3 new instant faves in Mindy Project, Broad City and Halt and Catch Fire, along with the superb Fargo S2 after not watching S1 and one of the great crack binges in UnREAL, while overlapping with some standbys on the way out like Community, Mad Men and Louie. I didn't expect to rate Mad Men that low but at some point "I barely remember anything that happened that season" is a sign something about it was imperfect