Great Teacher Onizuka, Detroit Metal City Recommendations
There are mainly two categories among my favorite comedy series.
The first one is the Fumoffu/School Rumble group, typical (but great) high school comedy.
The second category, only composed by GTO and DMC, distinguishes itself by a more particular sense of humor. They both share awesomely wicked main characters, and also 3 letters title acronyms.
Comedy titles with crude humor and crazily brash protagonists.