In October 1973, which late-night NBC talk show debuted with Tom Snyder as host?

In mathematics, what is a quantity having both direction and magnitude? In Mississippi there's a town called Coldwater, as well as a Hot... what beverage? In Moscow's Teatralnaya Square, you can see a show at which famous opera and ballet theater? In November 1971, which man hijacked a plane and parachuted out with $200,000, never to be seen again? In 1991, President George H.W. Bush named William Barr to replace Dick Thornburgh in which job? In one magazine cover story, which TV news personality discussed her new look after cosmetic surgery? In 1999, Pakistan's Nawaz Sharif tried to dismiss which army chief, but was overthrown by him instead? Which Liverpool-born horror author wrote and directed "Hellraiser" (1987)?