Usually, I would just link you guys to the official video of panel coverage, but considering the camera person majorly screwed up on this one with the audio quality (sounds like they were tossling around the camera too much or covering up the audio capture source), I have shared some additional YouTube links for better audio quality.

SciFi Wire Video (poor quality sound) - http://scifiwire.com/2009/07/sdcc-full-video-of-the-eu.php

YouTube User Isfmx Videos (whole panel) - http://www.youtube.com/profile?user=lsmfx&view=videos&query=eureka

A couple from YouTube User sg1taonas -  http://www.youtube.com/watch?v=3_bHBKcessY and 
http://www.youtube.com/watch?v=Sy7p1wLQd2c

Great quality ones from YouTube user rcjhawk - http://www.youtube.com/profile?user=rcjayhawk&view=videos&query=eureka