Honestly, the best picture I've probably ever done is of a nude torso I had to do for an art class in college. But I feel weird posting it on my blog, even if I don't consider it pornographic. It wasn't intended to be sexual.
I might start doing some more art pieces now that I'm finding myself with a little more time. I like to draw characters from stories the most, because, well, it relates to writing. I feel the story behind it, the character, and the emotion--I like that.