I roast chilies in the oven quite often. plays hell with the ex-smoke detector. it is now in a hallway.
I read not long ago about a woman that put either soup or popcorn in a microwave at work and instead of 5 minutes had set it to 50 minutes. well she forgot until the smoke detectors in the building were going off, the building was being evacuated and of course the microwave was totalled.
seriously... if you are hungry enough to go stimulate electrons on some food, don't you think your stomach when send up a clue phone message before you damn near burn down the building? I tend to not quite hover while cooking, but at least stay on patrol as it were