I suppose mine would be classic Everquest between 1999 and 2004. My friend bugged the crap out of me to try it, and I had no idea what the hell it was. He even over 100 bucks worth of stuff for my computer so I could run the game, so I felt I had to try it, although I was really dreading it. Bastard had me hooked and calling out of work! I still remember being a wee level stuck forever in Crushbone Keep, and he kept telling me I was the tank....it confused me, because I kept wondering when I was going to turn into some massive army tank, and why army tanks were in a fantasy based world. Good memories. He was a terrible MMO instructor, but we had a blast.