Daniel Johnston is an American artist and songwriter. He makes drawings that are full of symbolism, he uses imagery from comic books and religious references. His work is often self-referential and he repeatedly shows the same subjects, like angels and Captain America and the devil. His work is deeply personal, it often reflects Daniel's struggles with being bipolar.
Daniel is better known for his music, but he makes really awesome cartoons. He mostly does simple line drawings on 8.5x11 paper, but he does some larger stuff too. His work is more honestly personal than anything else I've seen lately, it makes Tracy Emin's work seem contrived.