ingame or irl?
former: probably 1.09 era. classic hc, mostly. hangin' out with the crew every night.
latter: I'm from a relatively small country, and we had an official diablo (1 & 2) community event. organizers rented a big venue, hundreds of ppl attended, from all over the country. this was pre- 9/11 (a better world in many ways I'd say). as you can imagine, there was smell of marijuana outside the building.
anyway, just an unforgettable event. meeting a lot of players face to face for the first time... meeting ppl whom you trashtalked/pked, or who trashtalked/pked you. you know, back on old bnet when you'd automatically land in your country's general chat - there was a sense of community. I miss that.