April 2 (UPI) -- Ellen Pompeo says she will "always pop in and out" of Grey's Anatomy . The actress, 55, discussed the long-running show's 20th anniversary when she stopped by the Jennifer Hudson Show Wednesday. Advertisement "The fans are so -- they keep it alive. It's their show, really, now. They've taken it over," she told Hudson. "I don't think that show will ever end. I don't know." Pompeo has portrayed Dr. Meredith Grey since the hit medical drama premiered in 2005, although she has