I must admit, that even after all these years, I am hooked on South Park.
I love watching the show South Park, created by Trey Parker and Matt Stone. Airs on Comedy Central, if you haven't seen it.
I really enjoyed the movie, Bigger, Longer, and Uncut.  It is one of my go to movies.
Yeah, they do a great job. Their success in large part can be attributed to the fact that they are infamous for profanity and dark, surreal humor that acts as satire towards a big range of topics. It's for mature audiences, of course.
I think it is really cool that it only takes them about a week to make an episode from start to finish
You're right about that! And what's even more impressive is that it's been around since August of 1997, and has had consistent success ever since then, which is marked by the show having the highest ratings of any basic cable program.
They have also released video games that keep that same unique humor of the show.  South Park: The Stick of Truth was one of those games
They have absolutely ventured into the video game market. But specifically the show itself started with a pilot episode that used cutout animation, and this led to the rest of the episodes using computer animation to mimic the cutout technique from the very first episode!