In both the East and the West, this year’s conference championships have emerged as actual, exciting contests. Four games into each series, and teams are tied 2-2. In the East, where Game 5 is played tonight in Boston, the Celtics enjoyed an early and commanding two-game lead over the Cleveland Cavaliers, only to have the Cavs take two games straight in its own city. Home-court advantage gives the edge tonight back to Boston – but with momentum on the side of the Cavs, who knows?