André Kuipers accidentally called American 911 emergency services when he made a telephone call from from the International Space Station.
He dialed 9 for an outside line, but instead of then dialing 011 to make an international call (North American dialing plan), he dialed the digits 11, and the call got routed to E911 services. It sounds like when he realized his mistake, he just hung-up the phone, which in Canada/US triggers the police to visit the location of where the call originated to investigate - in this case the number was registered to a room at the Johnson Space Centre (not the Space Station).
Given the rather important address that would show on police systems, can you just imagine the number of police vehicles that would race to the space centre? I could also imagine this would quickly show up on gov agency radars, like the FBI...
This poor astronaut will go down in history for this error, and probably never live it down, no matter where he goes. Conversations would go something like:
"We're having an astronaut come to give a speech at our convention."
"Who is it?"
"I forget his name, but he's the one who accidently dialed 911 that time from the space station."
"Ah, that would be André Kuipers...."