Celine Dion's Other Side: Metallica Head-Banger

Céline Dion swapped soaring ballads for power chords in Las Vegas, turning up at a Metallica concert and enthusiastically rocking out next to Jack Black. The 58-year-old singer, joined by her 16-year-old twins Eddy and Nelson, was caught on a fan video playing air-guitar and dancing as Black head-banged a...