Season 10 contains, of course, the Emmy-nominated "Make Love, Not Warcraft" episode, in which half the show had the kids as fat, disgusting slobs, and the other half had them as machinima-created heroes in Azeroth. And apparently the rest of the season is pretty good, too, not to mention that you can get a WoW trial for free with it.
So it sounds like a good deal on a good set of DVDs. It's also interesting just how much Blizzard is milking this connnection with the South Park guys (or maybe how much the South Park guys are milking Blizzard). Just imagine all the merchandising and tie-ins when Legendary finally released the World of Warcraft movies. Are we going to find Murloc marshmellows in breakfast cereals? Qiraji Quarter Pounders at McDonalds?