I wish I could have gone to it, it sounds like a number of interesting topics were discussed. Then again, I'm funny that way in enjoying a good lecture.

Here are some of the more wild stuff that is being taken seriously.

http://www.space.com/businesstechnology/060308_exotic_drive.html

FTL travel is interesting and all but this is the first I've seen someone discussing large scale construction methods in space.

Cool stuff hehe