What are the best Аниме series ?

My personal favourites:

Naruto/Shippuden
Death Note
K-On
Kimi ni Todoke
Puella Magi Madoka Magica
Durarara
Ouran Highschool Host Club
Another
Hell Girl
Free
Sword Art Online
Attack on Titan
Хеталия
персик Girl

and now I'm just starting on Higurashi :3

Naruto/Shippuden/Abridged
Detective Conan/Case Closed
FLCL/Fooly Cooly
FMA/Fullmetal Alchemist

My boyfriend likes Trigun, Cowboy Bebop, and stuff like that.

I don't watch a lot of anime. Not too much of a fan, no offense but I Любовь Sailor Moon. I have been watching it since I was a kid.

Naruto/ Shippuden
Pandora Hearts
Diabolik Lovers
Brother s Conflict
Bleach
Vampire Knight
Ect.

Elfen Lied
Madoka Magica
Dragonball Z
All Digimon Series

It really depends on what Ты like :x
A few of my избранное are:

Shugo chara
Kobato
kaichou wa maid-sama
tonari no kaibutsu-kun
and Наруто