Years ago, I was dating a girl during Thanksgiving. Her mother had started a turkey late the night before, and cooked it low for many, many, hours. Well, she called me and asked me if her turkey was still good, as she had lost power in her apartment (electric oven) during the night. I asked her if the bird had stayed in the oven the entire time power was out. She said it had. I told her the bird was probably still good. When she brought it over, I realized I had forgetten a crucial question. Obviously, her power had been out for quite some time, as that bird, unfortunately, reeked like last week's diapers.
Luckily, I had cooked a couple chickens, so it wasn't a total loss.