Best Unknown Anime [1990s - Early 2000s]

I am in the mood for some older lesser known anime. Preferably a more serious, less comedic anime. I like comedy but not as the main genre. I've seen/heard of:

Ghost in The Shell, Blood, GetBackers, Weiss Kreuz, Wolf's Rain, Trinity Blood, Witch Hunter Robin, Saint Seiya, Vampire Hunter D, DNA^2, Chrono Crusade, RahXephon, Shingeki no Bahamut, Saiyuki, Vandread, Gantz, Gilgamesh, .Hack, Tsubasa Chronicles, Initial D, Monster, Another, X Clamp, Ninja Scroll, Gunslinger Girl, Linebarrels of Iron, Noir, and Gungrave.