I still have my hardcopy of Phrack from HAL. I showed up with just my sleeping bag and some clothes with the expectation of staying in the shared tent. After wandering around the campus for 2 hours with the map in hand I couldn't find it and while wandering around had a random conversation with some Dutch guys that recognized my name from some of the old alt hack or hacking newsgroups and invited me to stay with them.

Seeing Emmanuel Goldstein being followed around by like 20 people(Seeing those 20 people follow him right up to the outdoor urinal then stand around awkwardly waiting for him to finish). Sitting in the back of the room watching him introduce a documentary about Phiber Optik then looking to my left and realizing he was sitting right next to me. Gosh I could go on for hours. Such a great experience.