I forgot to post my pictures of the FUDcon shirts. They came out great. Andreas gave us the idea of having a tag cloud to illustrate the shirt, and Charlie Brej wrote us a tool to generate the tag clouds from the FUDcon and Fedora logos.
Also, because of popular demand, they are black instead of white!
(modeled by Ray Strode!)
One thing I learned producing these shirts is that two layers of ink are used on black t-shirts like this, so there are two layers of white, and a layer of white underneath the blue. Good to know, I suppose, since it affects the price.