During the original run of Star Trek or shortly afterward, some Hollywood fan magazine ran a profile on Nimoy. They meant to include his drop-box address for fan letters, but they accidentally published his actual home address instead.
The Nimoys got an avalanche of mail and even some stalker-ish nerd lurking around the hedges. They had to move.
I'm looking for the source of this but I haven't found it yet. I saw it online within the past year or so.