Space Mountain broke down twice while I was on it today. The first time, I was in the handicap rocket, waiting to be transfered onto the main track. The second time, I was in the middle of the ride, but the rocket didn't stop until we entered the re-entry tunnel. The light effect stayed on for about 10-15 seconds, then the work lights came on. I almost didn't take any photos.
Take a gander at the photos here. Its amazing how such a cheap effect can really be cool.