I immediatly fell in love with the characters. They are detailed and have characteristics of an actual humanbeing having their flaws and their strenghts.

There's such a massive cast of characters, that there's bound to be one that you can relate to, one you will admire, and one that you will forever hate. That's what I really like about it ^^
Also, the character development is amazing, right down to even the minor characters.

Well not everything, but most. I just really love how everyone has this bitchin back story. I love just reading Narutopedia so I can read about everyones past without even watching the show. I also love the tragedy, especially the ones surrounding Gaara. LOVE the characters of course. :D It's just great!!

^^ That's SO true guys!! There's SO many characters and yet they put just as much effort into developing each one well.

Not everything but most things like storyline, characters, action, villains etc.