Whitney Houston (shown here performing in 1994) starred in the movie Waiting To Exhale, and contributed several songs to its breathtaking, beloved soundtrack.
Patrick Hertzog/AFP/Getty Images
In 1980, Stevie Wonder helped campaign for Martin Luther King Jr.'s birthday to become a national holiday. "I never saw it as being political," he says. "I just saw it as being the right thing to do."
Philippe Callant for NPR