Oh man Trigun brings back some fond memories, can't count how many times I've sat and watched that. I love wolfwood.
Elfien Lied just...just man, I ended up looking for the manga after I watched the anime just to find out the whole story. Black Lagoon was lent to me by a friend and then I immediatly bought it aftewards.
[hider=spoiler]When the boat flew in the air and he used that missile on the helicopter I went "I'm buying the rest of this anime."[/hider]
Code Geass and Death Note were nice, I'm partial to Code Geass myself but I watched Death Note too.

On a side note I'll have a post up tomorrow at the least.