I've read "it's stereotypical", "it's racist", I've even read that it was lewd and disrespectful.
My God people, it's a comedic sitcom which I challenge you to find one comparison of any ethnicity that is devoid of any of the above. Asian, Hispanic, Italian, White folks, any and all comedies are founded on stereotypes which add to the hilarity of the premise in which that ethnicity is displaying.
Bottom line, you want intelligent, you want to learn, you want something deep and celebratory of black culture... Catch a documentary or maybe a "based on a true story" type deal or just read a book.
This show is awesome, HBO style Great!