Post some examples of games doing this, especially games that do it a lot.The DevTeam Thinks Of Everything, abbreviated as TDTTOE, is a term used to describe when the NetHack DevTeam anticipated the player getting into an unusual situation, and programmed in special behavior for that case. This means that if you think of doing something "clever" in the game, the DevTeam most likely thought of it too, and the game will produce a realistic but unexpected response.
In Second Sight you can lock up the guards at the start and they have nearly 2 minutes of conversation related to something most people never did.
The game itself is full of these kinds of things.