Hard to believe, but it was 20 years ago this week that the build-up to the Olympic Games made front-page headlines worldwide – because one U.SA. ice skater, Nancy Kerrigan, was attacked after practice, her right knee clubbed by an unknown assailant. The attack, it soon was uncovered, was a plot by Jeff Gillooly and his friends to incapacitate Kerrigan – because she was seen by them as the main competition for another U.S. skater, Tonya Harding, who was Gillooly’s ex-wife. This