Most people who recall 1976 do so for its appallingly hot summer, when parks turned brown and roads melted. Some will also remember that the celebrity culture throve then as now and that none was more celebrated than James Hunt, Formula One world champion. He was even more celebrated than that most famous soap opera, the marriages of Richard Burton and Elizabeth Taylor; Hunt, who had a natural gift for celebrity, contrived to yoke theirs to his by handing his wife to Burton, who divorced Taylor to marry her.