South Park Season 12 is brilliantly topical and highly entertaining. Even though they are even more adult in their themes, this "cartoon" can be enjoyed by most age groups. (Kids under 18 MUST have their parents watch it with them.)
From Cartman contracting AIDS in the first episode (and beating it) through to Butters being convinced that he's a vampire in the 14th episode, Trey Parker and Matt Stone have created another season of thought-provoking, and discussion-triggering shows with no end in site. (After all, our crazy world provides endless new material for them to draw upon. LOL) They take real life ridiculousness and play it from the point of view of 9-year-olds and their insane families (in some cases, anyway). Nothing is crazier than the world through the eyes of any "worldly wise" wise cracking kids.
So, if you like to laugh out loud, you can't miss out on South Park Season 12 (or any of the other sets, for that matter). They are definitely worth the money, and can be enjoyed many times over.
If you aren't a fan of the series yet, start with Season 1 and work your way up from there. ;-)