In which 1985 film does 17-year-old Marty McFly get home early one night — 30 years early?

Which city hosted the 1984 Winter Olympics and became a war zone in the 1990s? Which band released the 1984 hit "You Might Think"? Which band featuring brothers Alex and Eddie scored its first No. 1 hit with "Jump" in 1984? "The Reflex" was the first U.S. No. 1 hit for which band, whose "Hungry Like the Wolf" had peaked at No. 3? Who led the Soviet Union from 1985 to 1991? In which 1985 John Hughes film do five high school students endure a daylong Saturday detention? Which bird completes the title of the 1985 spy film "The ___ and the Snowman," starring Timothy Hutton and Sean Penn? Which author's 1985 bestseller "Lucky" joined short-titled hits like James Michener's "Texas" and Carl Sagan's "Contact…