Harvest is the most nerve-racking time of year for winegrowers. After a long season of tending the vines, it's time for the frantic rush of picking and crushing. The chances of mishaps are high (see below). But two wineries, one in Washington and one in southern France, are dealing with an unexpected problem-someone stole their grapes right off the vines. Wine Spectator contributing editor Laurie Woolever explains.