This comes from Brian Fitzpatrick and Ben Collins-Sussman
Every open source project runs into people who are selfish, uncooperative, and disrespectful. These people can silently poison the atmosphere of a happy developer community. Come learn how to identify these people and peacefully de-fuse them before they derail your project. Told through a series of (often amusing) real-life anecdotes and experiences.
http://www.red-bean.com/fitz/presentations/2007-07-26-OSCON-poisonous-people.pdf
http://video.google.com/videoplay?docid=-4216011961522818645
I thought it was pretty cool.