Mass Effect. I was completely prepared to shelf this game the first time I tried it a month or so ago. I thought that it was borderline unplayable, but I'm really gad that I stuck it out long enough to level up.
Anyway, that's all I'm playing at the moment. I'm probably going to revisit either Bioshock, and/or Silent Hill: Homecoming next, but it seems like it might be a while. I try to only focus on one (demanding) game at a time.