My recommendation for today is not what most people would consider a manga, since it isn't from Japan. But, if you know what the word "manga" translates to, you'll agree that this counts. Today I am recommending Johnny The Homicidal Maniac by Jhonen Vasquez. You may recognize that name if you've ever watched Invader Zim. Johnny The Homicidal Maniac (JTHM) is another brilliant creation by Jhonen. I guess I should put a warning up here. In case you can't tell by the title, JTHM is not for young readers... or readers who get queasy at the sight of blood... or readers that are opposed to strong language. JTHM is one of the bloodiest graphic novels I've ever read. I don't think there's a single page in the whole book that doesn't have some kind of blood in one of the frames. 
But, if you can look past the extremely violent surface of the book, you'll find a great story underneath with many, many amazing insights into the human psyche. In JTHM Jhonen disects a lot of the little quirks of the human mind. As violent and, well, psychopathic as Johnny is, he really is a very intelligent person with questions about the world that he wants answered.
The story is really quite serious, which is funny when you think about how funny some of Jhonen's other creations are, but it also has some... humor in it. Every so often in the book there is a Happy Noodle Boy comic thrown among the pages. Happy Noodle Boy is the comic drawn by Johnny and is funny, but in a very twisted, morbid sense.
I definitely recommend JTHM for people who think they are able to handle the graphic nature of this graphic novel.My score: 5 out of 5.
I've yet to find a graphic novel that made me think like this one does. Also, the art style is very edgy and dark, which I really like.
