Since I happen to tend more to old school tabletop games than videogame RPGs (mainly because my PC can't handle half of the decent ones), I'd have to say I'm usually Neutral Good, and occasionally Lawful Good if I get tired to everything being easy to justify. On the off day that I do play a CPU game like Oblivion that decently lets you roleplay, I generally stick to the good side (though, in Oblivion it is almost impossible to beat the game with no crimes, since you get an assault for anything beyond breathing the air someone is in).