Which singer performed "Dare to Dream" with John Farnham at the opening ceremony of the 2000 Sydney Olympics?

As a young wife in the 1950s, which future first lady managed the accounts for her family's agricultural business? As Academy president, which swashbuckling star hosted and presented every award at the first Academy Awards in 1929? Which rock singer played Althea Flynt in the 1996 film "The People vs. Larry Flynt"? In the 1949 film "Little Women," which actress played Amy, who marries Laurie after Jo rejects him? Which word, as an adjective, can describe a document drawn up in 1787 and, as a noun, means a healthy walk? As an adviser to Henry VIII, who was made Archbishop of York in 1514 and a cardinal in 1515? In a letter, the abbreviation "P.S." is short for what word? As an example to her Russian subjects, which empress had herself and her son Paul inoculated against smallpox in 1768?