Travis links to Flickr photos from DragonCon (worksafe, though there’s some scantily clad Princess Leias and Leeloos), “North America’s second largest multigenre convention, held annually in Atlanta, Georgia.” Those genres appear to include comic books, science fiction and horror movies, and so forth. As Travis remarks, “Burning Man has the true nut jobs; but Dragoncon has action figures!” Nice use of the semi-colon there.
A couple of my favourite shots are the stormtrooper on vacation and an adolescent fantasy brought to life.
DarrenBarefoot.com 
They could have filtered some of the pictures… 11 000 pics… holy crap.
I have to say, I like this shirt.