For people who like adult, black, surreal comedy.here is a treat. South park is all in one. It has the darkest humor imaginable. As I am a big fan of black humor and sarcastic humor it is my one of my favorite show. There are plenty of jokes relevant to the plot and very less preaching exactly the thing you look for in a comedy show.
It is an animated US comedy sitcom which revolves around four abusive 3rd/4th grade boys. If you do not like insensible and weird humor this show is not for you. Also if you are sensitive and easily get offend on various issues, I recommend you to not watch the show, as there are many racist and political jokes.
The show is created by Matt Stone and Trey Parker, who also provide background voice of main characters and recurring characters. They have managed to do background voices almost to perfection.It has a lot of funny characters with nice build-up. 18th season finished recently and 19th season will be coming around in 2016. Just start watching the show if you have time and it will be a smooth marathon.
South park has also developed several games and a movie for its fans.