Hollywood power couple Beyonce and Jay-Z sat courtside together  Friday night (May 7) as the Cleveland Cavaliers took on the Boston Celtics during Game 3 of the Eastern Conference Semifinals for the 2010 NBA Playoffs in Boston. The final score was 97-87 in favor of the Celtics. Take a gander at a few pics of Bey and Jay chilling in their VIP seats at the game below…