-Dumb AIs, such as those that suicide. (In Assassin's Creed, I was hiding on a low roof, the guards gave up on looking for me and one jumped down from the level above me, hit the level I was on and died...It was quite possible the funniest thing I've ever seen an NPC do)
-Weird Havok graphics (AC and BioShock, moreso the latter, bodies twitch, stretch, flail and vibrate while they're supposed to be lying still. A body in a room that has not been entered and the body has not been touched will be slowly moving somehow. In BioShock there was a guy draped over a desk, dead, yet his head was bobbing rhythmically for no reason)
-sort of expanding on the last one; weird Ragdoll graphics. Especially when your character dies, they suddenly gain inhuman flexibility and their corpse folds and crumples up on itself, bending in ways that would take several tens of pounds of external pressure to achieve, once again for no apparent reason.
Poor Serathar *pats* I hated the children in TP as well. I don't think ANYONE is capable of liking them. Children only make good NON-PLOT-RELATED NPCs, or enemies if they're creepy evil little things. Please to be dissociating them from any and all story-related happenings, developpers!