The result, which has already been widely hailed as Rourke’s career-capping/redefining/resuscitating turn, is a characterization of rare intensity and pathos that bristles with the lived-in authority of someone who knows what it means to live with his back against the ropes. “I’ve seen this side of life. Unfortunately, I’ve seen this side of life,” Rourke sighs. As you watch the Ram onscreen — reduced to working the deli counter of a New Jersey supermarket after a heart attack takes him out of the ring, playing the electronic avatar of himself in an ’80s-era Nintendo wrestling game — the line between performer and performance all but disappears. Finally, we’re left with the sense Rourke has always given in his best work, of an actor who so thoroughly immerses himself in a role that he isn’t merely playing the character but living it, moment by moment, from the second he gets up in the morning until he goes to bed at night.