We could watch live Metallica videos all day long. Okay, okay, we already kind of do that. After watching hours and hours of videos, we found one that we can't wait to feature today. In this Video of the Week, we take a trip to Mexico City where we get to go backstage to see Metallica in one of their epic pre-show practice sessions, this time jamming on the instrumental, 'Orion.' As they wrap up the session, we're transported to the Sports Palace where the beginning of '...And Justice for All' kicks off to the sound of screaming fans.