I'll need to make an updated Anime List, since the old one is dated. I'll try an alphabetic order.
Here it goes.

Agatha Cristie's great detectives: Poirot and Marple
Ayakashi Ayashi
Azumanga Daioh
Berserk
Blood+
Bokusatsu Tenshi: Dokuro Chan
Death Note
Elfen Lied
Excel Saga + Puni Puni Poemi
Full Metal Panic
Lucky Star
Makai Seiki Disgaea
Midori no Hibi
Naruto and Naruto Shippuuden (up to a certain point)
Neon Genesis Evangelion
Rozen Maiden
Ruroni Kenshin
Sayonara Zetsubo Sensei
The Melancholy of Suzumiya Haruhi (first season + the two super deformed spinoffs)

Now watching:
Bleach (as it comes out)
Dragonball (Hungarian dubbing, that was adapted from the frenchmen)
Tengen Toppa Gurren Lagann

On the list:
Hellsing
Karin
Kamichama Karin

Possible future choices:
Gundam
Higurashi
Noir
Haruhi's second season (although I heard really bad things about it)

Quite a list, don't you agree?