Asheron's Call was my first MMO. Played it for like 6 years before moving to WoW where all my friend's were. One thing I loved about AC is you could run from one side of the world to another without zoning(for the most part). This was pretty unique back then. Another was the skill based system. No classes. It still holds a special place in my heart.

Still need to get around to trying the server emulator but I'm on Linux.