I frequent quite a few sites all over the net but one of the most creative spots is Dr. Comets BBS board. You can find it here: http://www.kurumi.sakura.ne.jp/~kem...../oekaki_m.htm.

I've made quite a few friends there, and though some of them have left, it's still a god place to see a lot of high quality drawings. Mario was just starting out, and though his drawings were amazing, people were really ripping his stuff, so I came in and defended him. We began to talk through emails, and were soon good friends, as far as you can be that way. He drew me many pictuces, and this is one of them; the other's to come in a bit!