Thinking back to Fallout 3, i can understand where their coming from as there were some damn creepy moments in there :
Andale - Just the whole frickin' level
Tenpenny Tower - Feral ghouls.......EVERYWHERE.
Dunwich Bulding - See above.
Vault 108 - Gary.
Got me thinking back to Resident Evil too. I remember buying that game and going straight into it with very little knowledge. The first time you see that zombie on the floor, who slowly turns his head to look at you - got some serious shivers from that!.
So, what are gamings creepiest moments?