I'll agree with everything Azar said. Except I think it's funnier now than it ever was. And while it's not apparent, South Park has alot of class for what it is. They're not afraid to say what needs to be said on most of the issues going on. It's unfortunate that they're presented in such crude manners, as the people who need to be watching the show don't because of that. But the crude mannerisms are what make it great.
There's alot of truth in that show. More than people realize. It's one of my favorite shows on television right now.