Had a blast presenting the GA open-source Ruby-on-Rails curriculum at the New York Times open source science fair last week. We now have community-contributed translations into Spanish and Chinese and the project keeps growing. The crowd genuinely enjoyed the baking soda and vinegar volcano inspired by @madsgo, too.
Here’s a blog post about all the exhibitors: http://open.blogs.nytimes.com/2012/11/21/open-source-science-fair-exhibitor-experiences/. The fair was followed by three excellent talks by @jashkenas on canvas tricks, @rmurphey on hacking Adruino with JavaScript and @holman about the mission of open sourcing. I even dug up my opensource.com anniversary T-shirt for the event, for which I earned a whoopee cushion that my son played with for hours.