Do you know of CLAMP? Here's a few of the lists of animes that they have written:
Clover
Kobato
Legend of Chun Hyang
Legal Drug
Tsubasa: Reservoir Chronicle
X/1999
xxxHolic
Angelic Layer
Cardcaptor Sakura
Chobits
Clamp no Kiseki
Clamp School Detectives
Duklyon: Clamp School Defenders
Magic Knight Rayearth
20 MensÅ ni Onegai!!/20 Masks, Please!!
Miyuki-chan in Wonderland
The One I Love
RG Veda
Shirahime-Syo: Snow Goddess Tales
Suki Dakara Suki (I like, therefore I like)
Tokyo Babylon
Wish
Clamp School Paranormal Investigators
Code Geass: Lelouch of the Rebellion
Code Geass: Lelouch of the Rebellion R2
.. just listed a few of their works here.. say, which of those have you watched?