I was at a conference in PA lately and at lunch we were discussing travel and specifically planes. One guy said he got on a plane, it pulled away from the ramp, started down the runway and the pilot shut down the engines. They taxied back to the ramp, the front door opened and after an hour of waiting they took off again. He asked the flight attendent what happened. She replied that the pilot heard a noise in the engine so they went back and got a new pilot. [Credit for this belongs to Dennis Christopher who relays this true story - Brian]
(From the "Rest" of RHF)