What's your biggest gamer achievement?

Being a top ranked (PvE) enhancement Shaman during BC. Those were the totem twisting days and managing a rotation was about as nuts as it ever was when I was still playing.

Then life got in the way.

Then I came back and played fire warlock. (It was the most selfish spec in the game at the time. 0 synergy with any other class and gave no buffs, but hell did it put out the numbers.)