I you are interested in showing off your cartographic products you might be interested in the upcoming 23rd International Cartographic Conference which will convene in Moscow, Russia the week of 4-10 August, 2007. You can submit hard copy or digital cartographic products to the Conference. Interested parties in the US must submit an entry form to Max Baber of Samford Univ no later than March 24. For those of you in other countries you can probably find your contact on the International Cartographic Association website.
Via a post on the AAG’s GIS Specialty Group listserv