South Park - Interview @ Joystiq
Joystiq has some short comments from Chris Avellone on the opportunity to work on South Park: The Stick of Truth.
Obsidian was dropped into South Park with a surprisingly clear vision of what to do, as a concept had already been proposed. "We didn't actually know what they were thinking about in terms of RPGs, so we went up there for one day, they ran us this animatic sequence of how they imagined the opening of the game playing," and Obsidian "got it" immediately. "It was hilarious, and we got it, we see what you're trying to make here. It's going to feel like the show, it's going to look like the show. Here's how you interpret the controller mechanisms."
What wasn't as clear from the outset was whether the Stick of Truth offer was true. "I would never have thought we'd get a chance to do an RPG like that, and like holy crap," Avellone said. "When we first heard about it, I seriously thought some other game company was punking us. 'Ha ha ha, we're from South Park and we want to do an RPG!... ha ha, fake.'"
Information aboutSP: The Stick of Truth