When Jay Z and R. Kelly teamed up for Best of Both Worlds, neither knew it would be at the expense of their friendship. Kellz' legal issues interfered with the duo's touring schedule, so they tried again on Unfinished Business, however, Kelly unexpectedly dropped out of that tour as well, during a stop in New York. He claimed someone was threatening his life. Jay told the audience that night, "I don't need that n***a."
(R Kelly: Photo: Jakubaszek/Getty Images, Jay Z Photo: Nick Elgar/ImageDirect)