As country star Buck Bonham, Willie Nelson is torn between Dyan Cannon and Amy Irving in which 1980 movie?

Which actor played Chris, a middle-class kid who sees war up close, in the 1986 film "Platoon"? As Claire Standish, Molly Ringwald endures Saturday detention in which 1985 film? As commander of the Army of Northern Virginia, who faced Ulysses S. Grant at the 1864 Battle of the Wilderness? As commander of which alliance's forces in 1950-52 was Dwight Eisenhower hampered by Europe's depleted armies? In the 2002 live-action film "Scooby-Doo," which actress, famous for slaying vampires, played Daphne? As deputy attorney general from 1997 to 2001, who made a controversial recommendation on a pardon for Marc Rich? As described in the Bible, which structure measured 300 by 50 by 30 cubits, a total of 450,000 cubic cubits? Which symbolic clock, set by the Bulletin of the Atomic Scientists, shows how close humanity is to global catastrophe?