Laurie Metcalf played Jackie, Roseanne's zany sister and best friend, for nine seasons. Her character was actually based on Roseanne's real-life sister, Geraldine. "It's quite a ride when after the first week of a pilot your show goes to number one and stays there for a long, long time," she says. "My favorite memory has to be truly every scene that I got to do with Roseanne, because she taught me so much about acting. I don't think that people gave her credit for how brilliant her acting is, because to make it look that effortless takes a lot of work."