There are also fun great nerdy social scenes that don't call themselves LARPs but are. I LARPed as part of a pirate fleet for over 5 years (and this was before the Caribbean movies), in the SCA (Society for Creative Anachronism). In fact, it was through this LARP that I knew the guys who brought me to TUNAC, the Totally Un-Named Anime Club of U of O, whose members coalesced into Alto Nimbus and developed Kumoricon!