Ghost In the Shell
Gantz
Death Note
Elfen Lied
The Melancholy Of Haruhi Suzumiya
Samurai Deeper Kyo
RahXephon
Air Gear
Other great anime is:
Samurai X
Full Metal Panic
Gundam Wing Mobile Suit
Blue Gender
Samurai Gun
Naruto
Bleach
Wicked City
Neon Genesis Evangelion
Trinity Blood
Hellsing
Monster
Angelic Layer
Tokyo Underground
Tokyo Mew Mew
Basilisk