I can't stop playing World of Warcraft. I admit ... i'm an addict.
But I wish I could stop playing, because after a while, you really do begin to see the games flaws. However, the interaction is on such an ongoing scale, it's difficult to escape at times.
Right now though, I'm going to force myself into Oblivion. I've dipped my toe in the water, only to take it out again. In, out, in, out. But this time, I really want to take the plunge and absorb myself in it's brilliance. This is truly, a magnificent title, and a true experience for any RPG lover.
I'm playing a lot of games off and on at the moment (Twilight Princess, Final Fantasy 12, Quake IV) ... but I'm hoping just to settle on Oblivion for now and work from there.