Nielsen and Sony Electronics ranked TV moments for their impact not just by asking people if they remembered watching them, but if they recalled where they watched it, who they were with and whether they talked to other people about what they had seen.
Sony was interested in the study for clues on consumer interests and behaviors and found "that television is really the grandmother of all the social devices," said Brian Siegel, vice president of television business for the company.
The passage of time has also diluted some moments once thought as unforgettable, simply because succeeding generations have no personal memory of them. Age also made a big difference in the survey.
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