Noir, all time favorite, Madlax was good too.
Scrapped Princess
Witch Hunter Robin
Trigun
Hellsing
Elfin Lied (This was really, really good, you had to watch the whole thing for it to pull together though)
Beserk
Irresponsible Captain Tyler and Excel Saga were funny as hell along with Full Metal Panic and Geobreeders.
Chrno Crusade
We can't forget Serial Experiments Lain
Neon Genesis Evangelion
Then there was the ./ dot hack series
Bleach was OK
Gankutsuou was awesome.
Then there is the classic Ghost in the Shell's which are older but had amazing insight into future tech...
Wait, was this supposed to be just 5? I need to stop typing....I don't think I could do just 5
oh, wait, Cowboy Bebop
Scrapped Princess
Witch Hunter Robin
Trigun
Hellsing
Elfin Lied (This was really, really good, you had to watch the whole thing for it to pull together though)
Beserk
Irresponsible Captain Tyler and Excel Saga were funny as hell along with Full Metal Panic and Geobreeders.
Chrno Crusade
We can't forget Serial Experiments Lain
Neon Genesis Evangelion
Then there was the ./ dot hack series
Bleach was OK
Gankutsuou was awesome.
Then there is the classic Ghost in the Shell's which are older but had amazing insight into future tech...
Wait, was this supposed to be just 5? I need to stop typing....I don't think I could do just 5
oh, wait, Cowboy Bebop