May 7, 1991: This Eastern Conference Semi-Final match-up marked the end of the Celtics - Pistons dominance in the East. One last chance for the stars of the 1980's, namely Larry Bird, Kevin McHale, Robert Parish, Isiah Thomas, Joe Dumars and others to show how much they wanted once more title and the series didn't disappoint. The series went to a classic Game 6 that has an ending to this very day that is still disputed and has fans of the Celtics wondering what if....