Diane Keaton turned the air blue on a U.S. breakfast show on Tuesday (15Jan08) when she carelessly used the 'f' word in the middle of a live interview. The actress was complimenting Good Morning America host Diane Sawyer about her looks when she forgot herself, prompting the shocked broadcaster to cover her own mouth with her hand. Keaton said, "I wish I had lips like that; then I wouldn't have to work on my f**king personality." The expletive ran live on America's east coast, but was edited out of the broadcast that ran three hours later on the west coast.