At my school we have a big board and the person who operates it plays like MTV, TFM, etc. When we went down about 2 weeks ago there was a big error message on it =]
It was funny, coz a good song was on and you heard the big beeping noise that happens when you get an error.
Rofl, that is absolutely hilarious! This happened once before on a billboard advertisment, and there was 4 nerds shouting at each other outside saying it was each others fault. - rAmmeh. (I think they ran the board.)