Kanye West & Jay Z
West has long envied his pal and frequent collaborator. "Me and Jay Z are brothers. For me to do what I do, when I do my streams of consciousness, I have to get Jay Z's blessing in order to get my voice out there," explained West, whose fiance Kim Kardashian has become friendly with Jay Z's wife, Beyonce. "He understands that this is my voice, and it's very necessary."