Johnny Depp is as at home on a concert stage as he is on a movie set.  The frequent guest guitarist has made a number of appearances with Aerosmith.  His most recent stint on stage with the Boston Rockers came this week when Depp jumped in on Big Ten Inch during Aerosmith's Wednesday (7/30) set at the Forum in LA.  Depp also jammed with the boys on Train Kept 'A Rollin' in their home town during a July 16th concert.