Many Americans spent the 1920s in a great mood. Investors flocked to a rising stock market. Companies launched brand-new, cutting-edge products, like radios and washing machines. Exuberant Americans kicked up their heels to jazz music, tried crazy stunts, and supported a black market in liquor after Prohibition. A popular expression of the time asked, "What will they think of next?" See the blue-skies optimism of the Roaring Twenties with this gallery from American Experience: "The Crash of 1929."