The movie showing on 'Zombie Theatre' when the advert for Cunningham's Hardware first airs is the 1953 Paramount Classic "The War of the Worlds". As another homage to this particular film is the name of the director of the new advert. His name is 'Mr Van Buren' after the character of 'Sylvia Van Buren', played in TWOTW by Ann Robinson.
Per the title, a huckster is a seller of small articles, usually of cheap or shoddy quality, or one engaged in haggling or making petty bargains.
There are references to the 1957 World Series. Hank Aaron's Milwaukee Braves defeated the New York Yankees 4 games to 3.