SPRING:
Doreiku
Golden Kamuy
Mahou Shoujo Site
Piano no Mori
Megalo Box
WINTER:
Darling in the FranXX
Karakai Jouzu no Takagi-san
Koi Wa Ameagari no You ni
Cardcaptor Sakura
For previous faves, ermmm... Death Note and FMAB go without saying, of course. The anime that warranted 6 month+ obsessions and the occasional adoption of a muse, ahem, also include No. 6, Yu Yu Hakusho, Monster, Cyber City Oedo 808, Yami no Matsuei, Ga-Rei Zero, Ouran High School Host Club, Anohana, Gantz ( the manga is probably the main reason... ), Saiyuki, Tonari no Kaibutsu-kun, Now and Then, Here and There, Honey and Clover, Cromartie High School ( i-- have no excuse ), and ~newly added~ Shinsekai Yori. Seriously worth the watch.
On a related note, how about any favorite manga/manwha? I powered through Bastard! and Killing Stalking ( warning: graphic in every way imaginable ) and adore anything by Kaoru Fujiwara.