Who was the MLB player known as "The Say Hey Kid"?

Willie Mays

Who was chained to a rock as a sacrifice to a sea monster before Perseus rescued her? Who was the god of the sea and earthquakes? Which animated TV series involves bending elements like earth, water, fire, and air? In Estonia, what activity do families traditionally do on Christmas Eve that involves relaxing at home? Who originally recorded the soul classic "Let's Get It On"?