Hm. I'm more of an oldschool otaku. I was into it when I was growing up and in my teens. Still into it today, but was more into it back then. My favorites are stuff like Trigun, Cowboy Bebop, Evangelion (You'll either love it or hate it). Some OVAs you gotta see are Ghost in the Shell (not Stand Alone Complex, the original) and Akira. I usually stick to the short 26 episode animes since the stories are more fleshed out and not dragged on with filler, but if you've only watched Bleach and Naruto, you might like stuff like Rurouni Kenshin, Flame of Recca and Yu-Yu Hakusho.
Here, use this chart and pick some of the series's from it, all of them are good and you can't really go wrong. I seen a fair share of what's on there and none of them have disappointed me yet. This chart also gives you the websites you can go too to find torrents and direct downloads.