The Black Eyed Peas will take to the stage as part of the opening ceremony for the Champions League final on June 3.  A performance by Alicia Keys last year meant the Real Madrid-Atletico Madrid final started four minutes late at the San Siro in Milan. The Black Eyed Peas will become the second act to appear at a final, before Juventus meet Real Madrid at the National Stadium of Wales in Cardiff. Lead singer will.i.am told UEFA's official website: "We're planning on harnessing the excitement of