Of course, I've got my gripes -- this is The Grouse, after all. My first has to do more with 3-D in general, though, and it's the fact that I always find it hard and somewhat painful to focus on something directly when it's in 3-D. Nvidia's technology is no different. If I try to look right at something, whether it's a squad member in Call of Duty, an evolutionary abomination in Spore or a brains-hungry zombie in Left 4 Dead, it actually hurts my eyes. But if I kind of step my eyes back, so to speak, and try to soak in the entire picture at once, it looks really impressive. Now, it's one thing to train yourself to "unfocus" if you're watching a movie, but that's not so easy to do in a video game where a lack of focus will get you killed.