My Vote would have to go to Gordeeva and Grinkov.
Think about it: My Sergei TV-Movie, Snowden on Ice, Target Fragences, 2 Enormous Websites (A Kind of Magic/Su-Jan's site).
Although (as tacky as it sounds) their popularity increased after Sergei died, even back in the 1980s-before the USSR collasped 'Ol nationalist Dick Button was gushing about them. Katia was (IMO) that Olga Korbut of figure skating. She just drew people in.
Although, most non-skating fans seemed to be drawn to them primarily because of their story-and that is unfair beacuse they were(and Katia is) really excellent technicians.