The popularity of Sir John Falstaff, the portly jokester in Shakespeare's 'Henry IV' plays, led to a sequel. 'The Merry Wives of Windsor' today would have been dubbed 'Falstaff II.' And like most sequels, the original idea wears thin. Falstaff is funny, but his coarse, self-aggrandizing behavior is one-dimensional. That's part of why Cincinnati Shakespeare's holiday show grows a bit wearisome.