Penny Arcade Expo

Penny Arcade Expo
Official site with schedule, FAQs and registration information.
http://www.pennyarcadeexpo.com/

Wikipedia: Penny Arcade Expo
Contains information about the expo from 2004 to 2007.
http://en.wikipedia.org/wiki/Penny_Arcade_Expo

GameSpot
Ricardo Torres gives a wrap-up of day one of the 2007 expo. <small>(August 25, 2007)</small>
http://www.gamespot.com/news/6177617.html