I figured what the hey, I'd reply to this.
Since you've asked, Darksurf, I've been a fan of a number of different animes over the years. Primarily, my two favorites as it currently stands are Rozen Maiden and Fate/Stay Night. I'm sure you've heard of both, and I'll forewarn you regarding F/SN if you haven't already checked the game (or it's accompanying screenshots). The game, most certainly, is for grownups in the sense that it's a hentai. The anime, however, was very enjoyable to watch, and I enjoy revisiting it from time to time.
I had quite the collection a year or two ago before selling it due to needing the cash for other things. Read Or Die (the OVA and the series), Mahoromatic (both seasons, though preferably the first), Ai Yori Aoshi, RahXephon.. I could recommend any number of series in terms of those that need to be seen.
Unfortunately, I haven't purchased any anime in a long while. For that matter, I haven't jumped off into the sea regarding fansubs recently, either. I've been eyeing Jigoku Shoujo and it's second season, as well as Higurashi, and the Rozen Maiden Overture episodes recently released. I hope I'm able to grab these sooner rather than later. I'm not getting any younger over here.
At any rate, thought I'd add my two cents.