I've played computer games my whole life and have never had motion sickness. I've played HL2 on PC before on a smaller screen and had not problem. When I play HL2 on my 27" mac i get sick after about 30-40 mins and feel terrible. I've played MW2 and MW1 on bootcamp on my 27" and haven't had a problem. I'm really not enjoying HL2 but I'm not sure whether it's because it just sucks or because I feel sick the whole time. Does anyone else get this on HL2?