i've always wondered if there was a more mature wing of anime fandom who refused to fraternize with the loli/hentei/dmz fanboys
What's "dmz?" Do you mean DBZ?
I have zero interest in shonen fighting shows (Naruto, DBZ, Saint Seya, etc.), hentai does nothing for me, and I find loli/moe really disturbing.
I like giant robots (Gundam, Votoms, Macross, Dragonar), Ghibli, Satoshi Kon, Leiji Matsumoto (Captain Harlock, Yamato, etc.) and fantasy/scifi stuff like Last Exile, Twelve Kingdoms, Escaflowne, etc.