As the temptress Lola Lola, who sang "Falling in Love Again" in the 1930 film "The Blue Angel"?

Which child actor played the Amish boy Samuel Lapp in the 1985 film "Witness"? As Heinrich Schliemann is to Troy, Leonard Woolley is to which ancient city? Which defense secretary under JFK and LBJ made repeated visits to South Vietnam in the 1960s? As secretary of war from 1904 to 1908, William Howard Taft oversaw construction of which waterway? As the 1932 Democratic candidate for president, who promised to end Prohibition? As the 1943 winner of which national title did Jean Bartel sell about $2.5 million in war bonds? As the 1960s began, Marty Robbins topped both the pop and country charts with which hit? As the angel in 1996's "Michael," which actor takes credit for writing Psalm 85?