Rumors are circulating that R&B legend Mary J. Blige will follow in the footsteps of Twisted Sister frontman Dee Snider and join the cast of the hit Broadway show, "Rock of Ages."  Although a deal has not yet been signed, Blige has reportedly expressed interest in taking on the role of Justice Charlier, the owner of the Venus Club.  Actor Tom Cruise has reportedly also been approached about joining the cast.