After having to restart my Just Cause 2 session when my NPC escort character refused to move forward, even after I blasted him in the face TWICE with my previously mounted mini-gun (sending him hilariously careening into the jungle backdrop), I was quick to recall all the other similar glitchy moments I've had in open-world games over the years. GTA, inFAMOUS, Fable, etc., what do you recall as your favorite of these nearly unrepeatable gaming moments?