Umineko no Naku Koro ni takes the big cake for me (The VN, the anime is kind of... Not that great, insulting even), magic, mystery and beyond twisted logic.
As for anime themselves, let's say... Made in Abyss was great, still waiting for the movie, I'm looking forward for the second season of Re:Zero and well, Fullmetal Alchemist has a special place in my heart.