Jay-Z’s greatest cameos: Aidin Vaziri | Jay-Z has broken chart records. He owns sports franchises. The president has him on speed dial. He designs his own clothes. And his single with Alicia Keys, “Empire State of Mind,” from his latest album, “The Blueprint 3,” helped the Yankees win the World Series. But that doesn’t mean the Brooklyn rapper, who was born Shawn Carter and occasionally likes to call himself Young Hova, is too busy to appear on other people’s records. Since making his debut in the early ’90s, the rapper has made a habit out of stealing the limelight from his hosts, including everyone from his wife, Beyoncé, to friends in Coldplay. In anticipation of Jay-Z’s appearance at HP Pavilion in San Jose, we revisit some of our favorite cameos. Read more.