Perfectly timed coincidences can make you feel crazy when you're the only one who saw the moment happen and nobody believes you, which is why perfectly timed photos of these moments are priceless.
Of course, not all coincidences happen in a fleeting moment, some just sit there and wait for the camera to capture their good side.
And finally there are those sightings that are called "coincidences" for lack of a better term, like seeing two signs which may or may not have been put up together on purpose. I mean, did the city sign installer really not see the extraterrestrial connection?