Day Three of the DNC: Joe Biden's Night

Hillary Clinton's much awaited message last night was billed as her chance to demonstrate party loyalty by putting an end to the much reported "tensions" resulting from a primary season that was dramatically historic and dramatically close. Hillary might be a hard act for Bill Clinton to follow, but that's his job tonight. Barack Obama reportedly told him to say whatever he wants to. The rest of the night is choreographed to highlight vice presidential candidate Joe Biden and America's relationship to the rest of the world. Are continued tensions between Obama and Clinton forces exaggerated by reporters hard up for a story? What does Biden bring to the ticket and how was he chosen?