In the course of some archiving I stumbled across the April 1st, 2003 hoax I perpetrated on the Brandeis community. On that day the home page of Boogle, the search tool I maintained to make finding and sharing files on the campus network easier, was replaced by a letter from the Recording Industry Association of America explaining how students would have the price of all music and movies on their computers added to their term bills. The reaction was, in many cases, sheer terror, probably because the hoax seemed so plausible.
Sadly, we did shut down the service shortly thereafter, due to mounting pressure from the actual RIAA and the increasingly hostile legal environment. The school newspaper covered both the hoax and the actual shutdown.