Which company, which provided Internet service to millions, was known by the initials AOL?

A proverb says that which seldom knocks twice? Which energy services company has traded on the stock exchange as HAL? In Spanish, "venado" is the meat of which animal? What does HMO stand for? Which provincial capital's name is Latin for "queen"? A prune is which fruit before it becomes shriveled? A psychiatrist treats a woman with multiple personalities in which 1957 film? Which psychologist's autobiography "Memories, Dreams, Reflections" was published in 1962?