A documentary film crew in the Amazon encounters a giant snake in which 1997 film?

What is a doctor who specializes in the care of the elderly called? A mock documentary called "Yankee Doodle Doctor" was made by the wacky medical staff on which 1950s-set sitcom? Complete the title of Errol Morris's 1988 documentary about Texas justice: "The Thin ___ Line". A documentary about which woman won a 1955 Oscar, and seven years later Patty Duke won an Oscar for playing her? Which Louisville-born boxer's rhyming boasts have led many to call him a forerunner of rap? The documentary "From Mao to Mozart" was made about which violinist's 1979 tour of China? According to superstition, a dog doing what means someone's death is near? A U.S. dollar dated 1804, made of which metal, is now worth over a million dollars?