If you are interested in trying out a MMOG that simulates interstellar colonization and war, check out OGame.
One of my family showed it to me this weekend and it's interesting. You don't have to focus on the game continuously but set operations in motion that continue while you may not even be logged on. The technical organization “feels” a little like Starcraft, but without the point-and-click look and feel.
It's the kind of game a system administrator, or perhaps even a manger, could love.