Sore sports ... Bank of America, sponsor of the Winter Olympics, is trotting out its employees in televised spots that feature earnest staffers giving their best in skiing and speed skating events. Giving their all, the B of Aers take "Agony of Defeat"-type spills throughout the course but live the dream that is Olympic competition. Still, the painful wipeouts pale in comparison to the grueling endeavor of moving pro rata paper through the market.