Whoa. I don't know how I missed this until now, although it feels particularly timely with New York Comic-Con this weekend (I'll be there doing coverage for Bleeding Cool and Tor — let's hang out!). Dorkly artists Julia Lepetit and Andrew Bridgman created these infographics breaking down every single stereotype you're likely to find at a comic book / video game / general geek culture-based convention, and, well, they're all pretty accurate (not to mention utterly hilarious).
Whether you've been to a con or not, you'll be amazed at how long this list keeps going. And every single caricature is remarkably accurate. So I guess it's good that there are so many, because at least we're stereotyping people into too broad of categories? Sure, that sounds like a rational justification for laughing at other people (most of whom are just like me).