Which Shiite religious leader returned from exile in 1979 to lead Iran's Islamic Revolution?

The 1978 film "Superman" was scripted in part by which author of "The Godfather"? "In space no one can hear you scream" was the tagline of which 1979 film? In 1979 a ceremony returned the Canal Zone to which Central American country? Which 1979 comedy ends with the crucifixion song "Always Look on the Bright Side of Life"? "At first I was afraid, I was petrified" is the opening line of which 1979 hit? In which 1979 comedy does a bankrupt Barbra Streisand decide to manage a boxer? Clint Eastwood played real convict Frank Morris in which 1979 film about a 1962 prison break? Complete the title of the 1979 sci-fi series: "Buck Rogers in ___".