joseph bernard andré geoffrion (; february 14, 1931 – march 11, 2006), nicknamed boom boom, was a canadian professional ice hockey player and coach. generally considered as one of the innovators of the slapshot, he was inducted into the hockey hall of fame in 1972 following a 16-year career with the montreal canadiens and new york rangers of the national hockey league. in 2017 geoffrion was named one of the '100 greatest nhl players' in history.