I am the vice-chair for a sci-fi/gaming convention in Nashville, TN called Hypericon. We are looking to set up a programming track similar to DragonCon's SkepTrack and we need your help.
If you would like to come to our con and talk about critical-thinking-type stuff, email me at Gaming AT Hypericon DOT Info and we'll work something out. The con isn't until next June so we've got plenty of time to get you set up.
We are also looking for people to talk about science. Any kind of science. The lovely and talented Rob Knop gives a couple of talks each year and they are awesome. Come join him in the awesome.
The picture in this post is the promotional art for Hypericon 2008, painted by my awesome wife!