To call Tony Soprano one of the best performances ever captured on film should be an exaggeration, but in truth it’s an understatement. In six seasons of The Sopranos we followed Tony through every emotion that a human being could experience—from the peaks of highest joy to the depths of self-pitying despair, with frequent glimpses into the existential sorrow underneath it all. We stuck it out with Tony, no matter how bad he got, because he felt real to us, and he felt so real to us because of the work of actor James Gandolfini, who died of a heart attack yesterday at 51.