I posted a thread about this several months ago, and it appears that there is a rather large number of people on these boards who get headaches from watching movies on DLPs. Others assured me that this only happens to a small percentage of people, but since i have extremely sensitive eyes (i can see the difference between 85 and 100Hz and get headaches at below 85), i think i may belong to that group. So i'm going to audition an LT150 next week, but i'm not sure how long i should watch it for to see whether i get a headache or not? So if you're one of the people mentioned above, how long does it take you? Ten minutes? An hour? An entire movie?