Betty and Barney hill abduction has to be one of the most significant of them all as it happened to be the 1st reported and was also the 1st that was widely publicized around the world.
After that many   more...other witnesses came forward with their stories. And a new era began in the world of Alien abduction
Another from UFO files and this actually has the tapes of some of their hypnosis which some may find disturbing!  less