Legendary singer Meat Loaf made an impromptu appearance last night at Hollywoods Viper Room, where he jumped onstage with the comedic rock band Metal Shop, belting out Bon Jovis You Give Love A Bad Name, then dueling with vocalist Michael Diamond (Ralph Saenz) on a medley of songs including Louie, Louie. He had in tow, his daughter, vocalist Pearl, Scott Ian of Anthrax, and our very own legend, Lonn Friend. Meat Loaf said it best himself, as he sang repeatedly, Im a bad motherfucker!