Lucille Ball (who died on April 26, 1989) and Desi Arnaz rewrote the book on television. As the married stars of their own TV sitcom, I Love Lucy, they broke taboos becoming one of television’s first bicultural couples and by openly acknowledging Ball’s pregnancy and incorporating it into the show’s storyline. Together they pioneered a new paradigm for television production and distribution and built an empire in the process. And, of course, they were hilarious and adorable together on camera, too. Try your hand at our Lucy and Desi quiz and see how much you know about their amazing lives on screen and off.