Mariah Carey has been a pop superstar since the early 1990s, and now the singer is back with her tenth studio album, E=MC2. Carey had receded from the public eye a little in the early part of this decade, but made a huge comeback in 2005 with her Emancipation of Mimi album. On E=MC2, Carey keeps the comeback alive. She has already scored a major #1 hit with the song "Touch My Body," and there are many other songs on E=MC2 that could become huge hits as well.