The possibilities were limitless. Mark McGwire could turn his name into a commodity, his image into a series of trinkets, his life into a string of appearances. Mark McGwire, Inc. He could take the time-honored farewell tour, be carted around the country like a traveling museum piece, human memorabilia, a walking item from the Home Shopping Network. He could enter the land of the perma-grins, with a gift and an ovation in every city. Hey, what do you know -- another recliner! Laughs and handshakes all around. It's been done before. But McGwire has always treated public ostentation the way...