Probably the shirt I'm wearing as a part of my costume in this picture (first on the page): http://www.somethingawful.com/d/comedy-goldmine/paint-goons-2.php?page=3

I dressed up as The Internet for Halloween once (a costume which I still think was sorta funny), but after foolishly posting it on Something Awful, I found myself immortalized in a "make fun of pictures of forum goons" post. Not my most glorious moment to be sure.