Once a game show host on "Concentration," who is better known as a longtime host of ABC's "20/20"?

In 2008, which Palo Alto-based computer and printer giant acquired the services company EDS? At noon on April 30, 1789, George Washington was sworn in as president in which city? At Cincinnati's 1994 Oktoberfest, about 48,000 people flapped their elbows like wings in which dance? At one point in which 1862 novel does Jean Valjean own a factory? Before becoming first lady of the United States, who was first lady of Texas from 1995 to 2000? At one time, actress Tippi Hedren was which actor's mother-in-law? The sail-shaped Burj Al Arab hotel, more than 1,000 feet tall, stands in which United Arab Emirates city? At over 12,000 feet, Mount Cook, also called Aoraki, is the highest point of which country?