I will be the first to admit it, I don't usually read gag manga. The whole point of there not being any real story or continuation throughout a manga is still something that throws my head for a little spin. I need action, suspense, plot even ( I know that's a shocking concept for some people). Yet I gotta say, Zetsubou was a pretty enjoyable read. Much smarter than I was expecting from a gag manga. The jokes were a little smarter and the numerous references that is shoved into this manga is pretty impressive.
More gag manga like this black comedy might need to be found in my near future.