Which old nickname for the American South may come from a $10 bank note printed in New Orleans?

An old proverb says that many what make light work? According to an old proverb, what knocks only once? An old satellite brings Clint Eastwood's retired engineer back into service in which 2000 film? An old stuffed bear from which German company, known for the button in its toys' ears, fetched a huge sum at auction in… Which American figure skater won Olympic gold at Albertville in 1992? An ominous character from which 1949 novel lent his name to a CBS reality series that began in summer 2000? An ootid is a cell that matures into what? Which popular Rimsky-Korsakov piece comes from his 1900 opera "The Tale of Tsar Saltan"?