FILE: Carol Burnett shares a laugh with Tim Conway during taping of her final show , March 19, 1978 after 11 years of music and comedy on CBS. "I think it's classier to leave before you're asked to leave, " Miss Burnett said during a break in Friday's taping. "I'm proud of our show. I'm no dummy. It's time to put it to bed. "
George Brich / AP