Higurashi No Naku Koro Ni :)
Vataro, Eater of Souls wrote:
fudge?! Seriously, be gentle with him.
What adult swim usually airs and what you've listed are mainly action series. So let me give you a few action series that will probably suit your tastes. I apologize if you've seen any of these before.
Eureka 7 - Surfing mecha robots, less ridiculous than it sounds.
Gurren Lagann - Mecha robots that take their style and shove it down your throat, more ridiculous than it sounds.
Code Geass - Mecha Death Note, last mecha series I swear.
Fullmetal Alchemist - A 'magic' system that makes sense.
Claymore - Dark fantasy series full of monstrous characters.
FLCL - Short and sweet. Guitars are weapons.
Darker than Black - Interesting powers and costs.
Pumpkin Scissors - Lighter on plot, heavier on comedy.
Black Lagoon - Most realistic series in this list.