My first campaign was B2: Keep on the Borderlands. I survived 1st edition (and miss the comics they put in the rule books), loved the emphasis on non-combat skills in 2nd edition, loathed the number of supplements for 3rd edition, gave 4th edition a shot and hated it, and have wholeheartedly embraced Pathfinder (the adventure paths are awesome!). I also enjoy Call of Cthulhu (huzzah for insanity rules!). I cast magic missile at the darkness.