"For the 'Amnesia Fortnight' project we let people fill out a form where they got to rank which game they worked on and then we also let the leaders on each team rank who they wanted on their team. We had this amazing Excel spreadsheet that, somehow, using algebra, or possibly calculus, decided the intersection of those two ranks to put everyone on the team they most wanted to be on and also where they were most needed."
More great stuff, including the influences on Costume Quest, can be found in the full article, so go read it - the life you save may be your own.
Source: MTV Multiplayer
http://www.escapistmagazine.com/news/view/102798-Funny-Coincidence-Tim-Schafer-Making-Antiques-Roadshow