shouldn't STALKER, not halo be considered the game with the best AI in games. while the combat AI isn't always good (when it works though, it works very well), all of the entities in the game interact in life-like ways, with no interaction needed from players. dogs group together, stalkers and bandits fight, loot each other, setup camps and do all sorts of things in the zone. also none of this is scripted at all

who cares how the game look, the difference is barely noticeable except in dragon age (however it was stated that it runs worse on PS3, probably because it couldnt handle the extra textures and effects). Xbox has way better exclusives than the PS3 even if the graphics arent to the level of uncharted 2 (which is nothing compared to Crysis or ArmA 2)

My personal favorites are the Scarab Gun in Halo 2, The black eye skull in Halo 2, and Your Name crystal in Sw: KOTOR 2 Sith Lords