While filming ‘Walk the Line’, the biopic about American country music star Johnny Cash, Joaquin Phoenix bewildered audiences when he actually learned to play the guitar and sing in his character’s deep, calm, bass-baritone voice. When filming the emotionally wounded and dangerously psychotic villain Commodus in The Gladiator, Joaquin carried a sword around with him everywhere, whether on or off set. 

Phoenix is an aficionado of ‘method acting’, a dramatic technique in which actors try to identify as closely as possible with the character played.