Martin Mull, the droll comedian, actor, singer-songwriter and painter who found fame on the soap opera satire Mary Hartman, Mary Hartman and its spinoff Fernwood 2 Night, has died. He was 80. Mull died Thursday at home after a “valiant fight against a long illness,” his daughter, Maggie Mull, shared on her Instagram. “He was known for excelling at every creative discipline imaginable and also for doing Red Roof Inn commercials,” she wrote. “He would find that joke funny. He was never not funny. My dad will be deeply missed by his wife and daughter, by his friends and coworkers,...