Nadia Comaneci

At the age of 14, Comăneci became one of the stars of the 1976 Summer Olympics in Montreal. During the team portion of the competition, her routine on the uneven bars was scored at a 10.0. It was the first time in modern Olympic gymnastics history that the score had ever been awarded. The scoreboards were not even equipped to display scores of 10.0—so Nadia's perfect marks were reported on the boards as 1.00 instead. Over the course of the Olympics, Comăneci would earn six additional 10s, en route to capturing the all-around, beam, and bars titles and a bronze medal on the floor exercise. The Romanian team also placed second in the team competition.
Comăneci was the first Romanian gymnast to win the all-around title at the Olympics. She also holds the record as the youngest Olympic gymnastics all-around champion ever; with the revised age-eligibility requirements in the sport (gymnasts must now turn 16 in the calendar year to compete in the Olympics; in 1976 gymnasts had to be 14 by the first day of the competition), it is currently not possible to legally break this record.
Comăneci's achievements at the Olympics generated a significant amount of media attention. The theme song from the American soap opera The Young and the Restless became associated with her after cinematographer/feature reporter Robert Riger used it against slow-motion montages of Nadia on the television program ABC’s Wide World Of Sport. The song became a top ten single in the fall of 1976, and the composer, Barry De Vorzon, renamed it to "Nadia’s Theme" after her. However, Comăneci never actually performed to "Nadia's Theme." Her floor exercise music was a medley of the songs "Yes Sir,That’s My Baby" and "Jump in the Line" arranged for piano.
She was the 1976 BBC Sports Personality of the Year in the overseas athletes category and the Associated Press's 1976 "Female Athlete of the Year". She also retained her title as the UPI Female Athlete of the Year. Back home in Romania, Comăneci's success led her to be named a "Hero of the Socialist Labor;" she was the youngest Romanian to receive such recognition during the administration of Nicolae Ceausescu.