More like the White Rabbit than the Mad Hatter, Onideus Mad Hatter seems to pop up out of nowhere on various usenet groups I check in on from time to time, like
alt.2600. At first I thought he was kinda rude and obnoxious. Now I realize he is one of the two or three individuals in the world today really pushing the internet as an artistic medium. A true genius. He should get a MacArthur Fellowship.
More on him at
Encylopedia Dramatica