"Black Rain," "Gladiator" and "Black Hawk Down" were all directed by whom?

"Black Boy" is a 1945 autobiography by which author of "Native Son"? "Black, Brown and Beige" is a 1943 jazz suite by which bandleader nicknamed "Duke"? Black Friday, September 24, 1869, resulted from Jay Gould and Jim Fisk's attempt to corner the U.S. supply of what? In the United States, Black History Month is observed during which month? The stock market crash of October 24, 1929, was "Black Thursday"; what is the crash of October 19, 1987, called? Blackwell's, a famous bookshop founded in 1879, is in which British university city? Will Ferrell and Jon Heder play rival competitors in which sport in "Blades of Glory"? On which NBC series did Blair Underwood play President Elias Martinez?