My wife and I were recently in Palma de Mallorca and took the famous electric train to Sóller. As we were in the last downhill tunnel, one of the brakes seized. The conductor came through the cars and said that the repair would take 5-10 minutes but that the electricity would be out. The only light we had was from a few people that happened to have small flashlights and glow from cell phones. Of course I had to try to take a picture, right? I chimped on the D300 screen and laughed at myself out loud at the absurdity. I think I freaked a few folks out too by laughing in the dark. 
