Anything by Hayao Miyasaki. (Nausicaa, Castle In The Sky, Princess Mononoke, etc.)
Anything by Satoshi Kon. (Perfect Blue, Millenium Actress, Paprika)

The Girl Who Leapt Through Time
Cowboy Bebop
Trigun
Gankutsuou: The Count Of Monte Cristo
Le Chevalier D'Eon
Serial Experiments Lain
Jubei-chan
Irresponsible Captain Tylor
Magical Shopping District Abenobashi
Haibane Renmei
Vision Of Escaflowne