Year Introduced: 1993
Sport: Hockey, Soccer

Soccer has been criminally late in adopting goal-line technology, but the NHL has been on top of the innovation since '93. By using an overhead camera, referees can consult instant replay to decide whether or not the ball (or puck) crossed the goal line--a crucial determinant in the outcome of every game. It's always good to see when an organization is committed to getting things right. FIFA, what's taking you so long?