You remember Make Love, Not Warcraft, right? Well now you can own it on DVD via the South Park Season 10 DVD, which includes a 14 day World of Warcraft Trial.
Target's Special Version:
I was at Target and noticed they have two versions:
This pic shows the alternate image on the special packaging:
For more coverage of the South Park and WoW - WoW Insider has a good collection of posts tagged "South Park."