Which 1981 Steve Martin movie took its name from a 1936 song?

A 1981 exhumation verified that a body in a Texas grave was which assassin, not a Soviet spy? Whose 1981 book was published in English as "Adieux: A Farewell to Sartre"? Which candy, a favorite of President Reagan, became a 1981 fad? Which 1981 film, with a movie within a movie, was called "The" what "Lieutenant's Woman"? Prokofiev's famous ballet is based on which Shakespeare play? A 1982 concert film showed Monty Python live at which landmark? A 1982 Cuban stamp marked the 15th anniversary of which revolutionary's death? Which playwright's 1982 play is set among the Jerome family of Brighton Beach in 1937?