@WD:
I would be careful about lumping compulsive personalities with fanboyism. Fanboys are illogically (and usually incorrectly) enamored with a particular product or character. Obsessive gamers (like me) simply play a game for hours on end. I love KotOR and Mass Effect, BfME, Age of Empires, Civ 4, and yes, even Halo, but I'm not a fanboy for any of those games. It is possible to play something for an unhealthy amount of time yet not be a fanboy. (I hope.)