Katie Couric: Katie Couric to guest-host 'Good Morning America'

Katie Couric is returning to mornings for one week, and "Good Morning America" has a sneak peek at what her guest-hosting stint will look like.Katie Couric, who spent 15 years on NBC's "Today" show, will sit in for Robin Roberts on ABC's "Good Morning America" next week. "We're thrilled to have Katie," Roberts said, announcing the news on air Thursday morning. It will be Couric's first timeKatie Couric will serve as guest host of Good

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