BigWillie has better photos than I do, but I'll throw in a couple (see if you can spot me in his Force on Force picture)..
My first trip to Historicon was awesome. Didn't sign up for anything, but that didn't seem to matter. You just show up and say you want to play, and you can. Quite overwhelming. So many vendors, games etc. A madhouse, but by Saturday I was good to go.