Ozzy Osbourne, Cher and Mary J. Blige are among the acts in this year's class of inductees at the Rock & Roll Hall of Fame. The Rock Hall entries, first announced during Sunday's broadcast of "American Idol," include Black Sabbath founder Osbourne, folk-rocker Cher and R&B titan Blige among its performer category. Folk-rock adventurers Dave Matthews Band, '80s hard rockers Foreigner, guitar hero and singer-songwriter Peter Frampton, funk and R&B mainstays Kool & the Gang and the influential rap... Read this story