Hehe, I wasn't too impressed with the Deus Ex AI either... There are some security robots that can't climb stairs, (daleks anyone?) and the people enemies are like, run around a corner and watch as it takes them a few seconds to run out, turn around, look in your direction, crouch, pull their gun out, and THEN FINALLY start shooting. I liked the gfx in hl1 better myself too.. there seemed to be more stuff. Deus ex had like, blank walls, flat ground, and hardly any textures. Personally, I like half life a lot better than deus ex, but I did enjoy both games. =) Deus ex was a different kind of game though. A lot slower and more RPG-ish. Half life is lots of action, less thinking, more blowing things up.