It was set to be an interesting pairing for Grammy perfromances:  Metallica & Lady Gaga. They took the stage and Lady Gaga looked the rocker part.  However, someone forgot to turn on James Hetfield's mic.  He eventually realizes something isn't right, and share's Lady Gaga's mic to save the perfomance.  There were flames, a rocking Lady Gaga, and even a dive into a mosh pit.  Between her Super Bowl perfomance jumping off the roof and the staircase at the end and this mosh pit dive, Lady Gaga is showing us she's quite good at jumping.