In 1905 Julius Marx began his vaudeville career Other the singing group The Leroy Trio and was abandoned in the middle of the tour. It was an inauspicious start for the person who would become ""Groucho."" A hundred years later, the Marx Brothers have permeated our culture from the plastic noses and glasses worn at parties to a Smithsonian exhibition which explains DNA recombination using A Night at the Opera. Although they completed relatively few films together, the brothers have become icons,...