"CBS Evening News" anchor Katie Couric shares her thoughts with ET about Diane Sawyer leaving "Good Morning America" to replace Charlie Gibson on ABC's "World News.""Ever since my days as a desk assistant at ABC News, I've always admired Charlie's work," Katie tells ET. "He's a talented reporter, a gifted communicator, and a wonderful person. I wish him all the best.
"Diane is one of the hardest-working people I know," she continues, "and this new assignment is the latest achievement in an already accomplished and illustrious career. And as I did, I'm sure she'll quickly find that she doesn't miss that early morning alarm clock."