Tommy has been involved in all 17 celtics champiotnships. How much of an impact has he had over the years as a player, coach, commentator? I contest that he is a vital part of why boston celtics fans are the most passionate fans inthe NBA. And his impact has caused the celtics win more games over the years because of the way he inspires passion from the fans. Anyone who criticizes his bias is overlooking his effect on fan morale.