Nothing keeps me too interested too long, these days. The only game I've managed to beat this year is RE5 unless you count old games (FF12, RE1-4, Jak 1-3). I had a brief stint playing WoW and I think that's the cure, but I haven't re-subscribed. I've certainly played a lot of good games this year like Devil Survivor but aside from Civilization IV, Vampire: Bloodlines, Titan Quest: Immortal Throne and RE5 I get bored with them pretty easily.
After being burned from almost every game I've been excited for this gen, it's really hard to stay excited. Of course, there's been a few gems and surprised, but I can say without a doubt that gaming is no longer important to me at this point. That's not to say all the games out there are bad; on the contrary, there's a lot of GREAT looking games out there, but I no longer have the urge to play them. I think having a girlfriend, having a decent social life and more are the reasons for that. Oh well.
On the flip side, I've taken up more interesting hobbies like photography in gaming's stead, so it's all good.