You’ll just get random answers of people’s favorite anime, but I’ll give you a list with intentional variety:
+ Fullmetal Alchemist: Brotherhood
+ The Melancholy of Haruhi Suzumiya
+ Neon Genesis Evangelion
+ Puella Magi Madoka Magica
+ STEINS;GATE
+ Kimi ni todoke
+ Parasyte -the maxim-
+ Violet Evergarden
+ Devilman Crybaby
+ Miss Kobayashi’s Dragon Maid