"I remember when we started the show, we had an order for six episodes, and we're like, 'This is great, because, when we're older, we'll always have these six shows'." That's South Park co-creator talking about his cartoon creation, which has now been on air for 10 years and more than 150 episodes. Who would have thought that the sometimes-offenssive adventures of four little boys would have been so successful?